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Introduction
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nats.io
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What is NATS
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Request-Reply
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Queue Groups
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Acknowledgements
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Sequence Numbers
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Introduction
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Connecting
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Connecting to the Default Server
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Connecting to a Specific Server
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Connecting to a Cluster
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Setting a Connect Timeout
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Ping/Pong Protocol
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Controlling the Client/Server Protocol
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Turning Off Echo'd Messages
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<a href="../../developer/reconnect/intro.html">
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Automatic Reconnections
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</a>
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Disabling Reconnect
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Set the Number of Reconnect Attempts
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<a href="../../developer/reconnect/wait.html">
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Pausing Between Reconnect Attempts
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</a>
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Avoiding the Thundering Herd
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</a>
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Listening for Reconnect Events
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</a>
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Buffering Messages During Reconnect Attempts
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</a>
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</ul>
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<a href="../../developer/security/intro.html">
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Securing Connections
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</a>
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<ul class="articles">
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<a href="../../developer/security/userpass.html">
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Authenticating with a User and Password
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</a>
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<li class="chapter " data-level="3.4.2" data-path="../../developer/security/token.html">
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<a href="../../developer/security/token.html">
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Authenticating with a Token
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</a>
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</li>
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<li class="chapter " data-level="3.4.3" data-path="../../developer/security/nkey.html">
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<a href="../../developer/security/nkey.html">
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Authenticating with an NKey
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</a>
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</li>
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<li class="chapter " data-level="3.4.4" data-path="../../developer/security/creds.html">
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<a href="../../developer/security/creds.html">
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Authenticating with a Credentials File
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</a>
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</li>
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<li class="chapter " data-level="3.4.5" data-path="../../developer/security/tls.html">
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<a href="../../developer/security/tls.html">
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Encrypting Connections with TLS
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.5" data-path="../../developer/receiving/intro.html">
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<a href="../../developer/receiving/intro.html">
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Receiving Messages
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.5.1" data-path="../../developer/receiving/sync.html">
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<a href="../../developer/receiving/sync.html">
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Synchronous Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.2" data-path="../../developer/receiving/async.html">
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<a href="../../developer/receiving/async.html">
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Asynchronous Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.3" data-path="../../developer/receiving/unsubscribing.html">
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<a href="../../developer/receiving/unsubscribing.html">
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Unsubscribing
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</a>
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</li>
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<li class="chapter " data-level="3.5.4" data-path="../../developer/receiving/unsub_after.html">
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<a href="../../developer/receiving/unsub_after.html">
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Unsubscribing After N Messages
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</a>
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</li>
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<li class="chapter " data-level="3.5.5" data-path="../../developer/receiving/reply.html">
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<a href="../../developer/receiving/reply.html">
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Replying to a Message
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</a>
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</li>
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<li class="chapter " data-level="3.5.6" data-path="../../developer/receiving/wildcards.html">
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<a href="../../developer/receiving/wildcards.html">
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Wildcard Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.7" data-path="../../developer/receiving/queues.html">
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<a href="../../developer/receiving/queues.html">
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Queue Subscriptions
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</a>
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</li>
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<li class="chapter " data-level="3.5.8" data-path="../../developer/receiving/drain.html">
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<a href="../../developer/receiving/drain.html">
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Draining Messages Before Disconnect
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</a>
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</li>
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<li class="chapter " data-level="3.5.9" data-path="../../developer/receiving/structure.html">
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<a href="../../developer/receiving/structure.html">
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Structured Data
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.6" data-path="../../developer/sending/intro.html">
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<a href="../../developer/sending/intro.html">
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Sending Messages
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.6.1" data-path="../../developer/sending/replyto.html">
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<a href="../../developer/sending/replyto.html">
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Including a Reply Subject
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</a>
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</li>
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<li class="chapter " data-level="3.6.2" data-path="../../developer/sending/request_reply.html">
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<a href="../../developer/sending/request_reply.html">
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Request-Reply Semantics
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</a>
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</li>
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<li class="chapter " data-level="3.6.3" data-path="../../developer/sending/caches.html">
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<a href="../../developer/sending/caches.html">
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Caches, Flush and Ping
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</a>
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</li>
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<li class="chapter " data-level="3.6.4" data-path="../../developer/sending/structure.html">
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<a href="../../developer/sending/structure.html">
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Sending Structured Data
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="3.7" data-path="../../developer/events/intro.html">
|
|
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|
<a href="../../developer/events/intro.html">
|
|
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|
|
|
Monitoring the Connection
|
|
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</a>
|
|
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<ul class="articles">
|
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|
|
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<li class="chapter " data-level="3.7.1" data-path="../../developer/events/events.html">
|
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|
<a href="../../developer/events/events.html">
|
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|
|
|
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Listen for Connection Events
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|
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</a>
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</li>
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|
<li class="chapter " data-level="3.7.2" data-path="../../developer/events/slow.html">
|
|
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|
<a href="../../developer/events/slow.html">
|
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|
Slow Consumers
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</a>
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</li>
|
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</ul>
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</li>
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<li class="chapter " data-level="3.8" data-path="../../developer/tutorials/intro.html">
|
|
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|
<a href="../../developer/tutorials/intro.html">
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|
Tutorials
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.8.1" data-path="../../developer/tutorials/pubsub.html">
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<a href="../../developer/tutorials/pubsub.html">
|
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|
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Explore NATS Pub/Sub
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|
|
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</a>
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</li>
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|
<li class="chapter " data-level="3.8.2" data-path="../../developer/tutorials/reqreply.html">
|
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|
<a href="../../developer/tutorials/reqreply.html">
|
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|
|
|
Explore NATS Request/Reply
|
|
|
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</a>
|
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</li>
|
|
|
|
<li class="chapter " data-level="3.8.3" data-path="../../developer/tutorials/queues.html">
|
|
|
|
<a href="../../developer/tutorials/queues.html">
|
|
|
|
|
|
Explore NATS Queueing
|
|
|
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</a>
|
|
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|
|
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|
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</li>
|
|
|
|
<li class="chapter " data-level="3.8.4" data-path="../../developer/tutorials/custom_dialer.html">
|
|
|
|
<a href="../../developer/tutorials/custom_dialer.html">
|
|
|
|
|
|
Advanced Connect and Custom Dialer in Go
|
|
|
|
</a>
|
|
|
|
|
|
|
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</li>
|
|
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|
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</ul>
|
|
|
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</li>
|
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|
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|
|
|
|
|
|
<li class="header">NATS Server</li>
|
|
|
|
|
|
|
|
<li class="chapter " data-level="4.1" data-path="../../nats_server/installation.html">
|
|
|
|
<a href="../../nats_server/installation.html">
|
|
|
|
|
|
Installing
|
|
|
|
</a>
|
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="4.2" data-path="../../nats_server/running.html">
|
|
|
|
<a href="../../nats_server/running.html">
|
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|
|
|
|
Running
|
|
|
|
</a>
|
|
|
|
|
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|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.2.1" data-path="../../nats_server/windows_srv.html">
|
|
|
|
<a href="../../nats_server/windows_srv.html">
|
|
|
|
|
|
Window Service
|
|
|
|
</a>
|
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|
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|
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</li>
|
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</ul>
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="4.3" data-path="../../nats_server/clients.html">
|
|
|
|
<a href="../../nats_server/clients.html">
|
|
|
|
|
|
Clients
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.4" data-path="../../nats_server/flags.html">
|
|
|
|
<a href="../../nats_server/flags.html">
|
|
|
|
|
|
Flags
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5" data-path="../../nats_server/configuration.html">
|
|
|
|
<a href="../../nats_server/configuration.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.1" data-path="../../nats_server/securing_nats.html">
|
|
|
|
<a href="../../nats_server/securing_nats.html">
|
|
|
|
|
|
Securing NATS
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.1.1" data-path="../../nats_server/tls.html">
|
|
|
|
<a href="../../nats_server/tls.html">
|
|
|
|
|
|
Enabling TLS
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2" data-path="../../nats_server/auth_intro.html">
|
|
|
|
<a href="../../nats_server/auth_intro.html">
|
|
|
|
|
|
Authentication
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.1.2.1" data-path="../../nats_server/tokens.html">
|
|
|
|
<a href="../../nats_server/tokens.html">
|
|
|
|
|
|
Tokens
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.2" data-path="../../nats_server/username_password.html">
|
|
|
|
<a href="../../nats_server/username_password.html">
|
|
|
|
|
|
Username/Password
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.3" data-path="../../nats_server/tls_mutual_auth.html">
|
|
|
|
<a href="../../nats_server/tls_mutual_auth.html">
|
|
|
|
|
|
TLS Authentication
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.4" data-path="../../nats_server/nkey_auth.html">
|
|
|
|
<a href="../../nats_server/nkey_auth.html">
|
|
|
|
|
|
NKeys
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.5" data-path="../../nats_server/accounts.html">
|
|
|
|
<a href="../../nats_server/accounts.html">
|
|
|
|
|
|
Accounts
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.6" data-path="../../nats_server/jwt_auth.html">
|
|
|
|
<a href="../../nats_server/jwt_auth.html">
|
|
|
|
|
|
JWTs
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.2.7" data-path="../../nats_server/auth_timeout.html">
|
|
|
|
<a href="../../nats_server/auth_timeout.html">
|
|
|
|
|
|
Authentication Timeout
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.1.3" data-path="../../nats_server/authorization.html">
|
|
|
|
<a href="../../nats_server/authorization.html">
|
|
|
|
|
|
Authorization
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.2" data-path="../../nats_server/clustering.html">
|
|
|
|
<a href="../../nats_server/clustering.html">
|
|
|
|
|
|
Clustering
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.2.1" data-path="../../nats_server/cluster_config.html">
|
|
|
|
<a href="../../nats_server/cluster_config.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.2.2" data-path="../../nats_server/cluster_tls.html">
|
|
|
|
<a href="../../nats_server/cluster_tls.html">
|
|
|
|
|
|
TLS Authentication
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.3" data-path="../../gateways/">
|
|
|
|
<a href="../../gateways/">
|
|
|
|
|
|
Gateways
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.3.1" data-path="../../gateways/gateway.html">
|
|
|
|
<a href="../../gateways/gateway.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.4" data-path="../../leafnodes/">
|
|
|
|
<a href="../../leafnodes/">
|
|
|
|
|
|
Leaf Nodes
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.5.4.1" data-path="../../leafnodes/leafnode_conf.html">
|
|
|
|
<a href="../../leafnodes/leafnode_conf.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.5" data-path="../../nats_server/logging.html">
|
|
|
|
<a href="../../nats_server/logging.html">
|
|
|
|
|
|
Logging
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.5.6" data-path="../../nats_server/monitoring.html">
|
|
|
|
<a href="../../nats_server/monitoring.html">
|
|
|
|
|
|
Monitoring
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6" data-path="../../nats_admin/">
|
|
|
|
<a href="../../nats_admin/">
|
|
|
|
|
|
Managing A NATS Server
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.6.1" data-path="../../nats_admin/upgrading_cluster.html">
|
|
|
|
<a href="../../nats_admin/upgrading_cluster.html">
|
|
|
|
|
|
Upgrading a Cluster
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.2" data-path="../../nats_admin/slow_consumers.html">
|
|
|
|
<a href="../../nats_admin/slow_consumers.html">
|
|
|
|
|
|
Slow Consumers
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.3" data-path="../../nats_admin/signals.html">
|
|
|
|
<a href="../../nats_admin/signals.html">
|
|
|
|
|
|
Signals
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.6.4" data-path="../../sys_accounts/">
|
|
|
|
<a href="../../sys_accounts/">
|
|
|
|
|
|
System Accounts
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.6.4.1" data-path="../../sys_accounts/sys_accounts.html">
|
|
|
|
<a href="../../sys_accounts/sys_accounts.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.7" data-path="../../nats_docker/">
|
|
|
|
<a href="../../nats_docker/">
|
|
|
|
|
|
NATS and Docker
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="4.7.1" data-path="../../nats_docker/nats-docker-tutorial.html">
|
|
|
|
<a href="../../nats_docker/nats-docker-tutorial.html">
|
|
|
|
|
|
Tutorial
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="4.7.2" data-path="../../nats_docker/docker_swarm.html">
|
|
|
|
<a href="../../nats_docker/docker_swarm.html">
|
|
|
|
|
|
Docker Swarm
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
<li class="header">NATS Tools</li>
|
|
|
|
|
|
|
|
<li class="chapter " data-level="5.1" data-path="../../nats_tools/mkpasswd.html">
|
|
|
|
<a href="../../nats_tools/mkpasswd.html">
|
|
|
|
|
|
mkpasswd
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.2" data-path="../../nats_tools/nk.html">
|
|
|
|
<a href="../../nats_tools/nk.html">
|
|
|
|
|
|
nk
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3" data-path="../../nats_tools/nsc/">
|
|
|
|
<a href="../../nats_tools/nsc/">
|
|
|
|
|
|
nsc
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.3.1" data-path="../../nats_tools/nsc/nsc.html">
|
|
|
|
<a href="../../nats_tools/nsc/nsc.html">
|
|
|
|
|
|
Basics
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.2" data-path="../../nats_tools/nsc/streams.html">
|
|
|
|
<a href="../../nats_tools/nsc/streams.html">
|
|
|
|
|
|
Streams
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.3" data-path="../../nats_tools/nsc/services.html">
|
|
|
|
<a href="../../nats_tools/nsc/services.html">
|
|
|
|
|
|
Services
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.4" data-path="../../nats_tools/nsc/signing_keys.html">
|
|
|
|
<a href="../../nats_tools/nsc/signing_keys.html">
|
|
|
|
|
|
Signing Keys
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.4" data-path="../../nats_tools/nas/">
|
|
|
|
<a href="../../nats_tools/nas/">
|
|
|
|
|
|
nats-account-server
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.4.1" data-path="../../nats_tools/nas/nas_conf.html">
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<a href="../../nats_tools/nas/nas_conf.html">
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Basics
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</a>
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</li>
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<li class="chapter " data-level="5.4.2" data-path="../../nats_tools/nas/inspecting_jwts.html">
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<a href="../../nats_tools/nas/inspecting_jwts.html">
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Inspecting JWTs
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</a>
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</li>
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<li class="chapter " data-level="5.4.3" data-path="../../nats_tools/nas/dir_store.html">
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<a href="../../nats_tools/nas/dir_store.html">
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Directory Store
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</a>
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</li>
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<li class="chapter " data-level="5.4.4" data-path="../../nats_tools/nas/notifications.html">
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<a href="../../nats_tools/nas/notifications.html">
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Update Notifications
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</a>
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</li>
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<li class="chapter " data-level="5.4.5" data-path="../../nats_tools/nas/mem_resolver.html">
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<a href="../../nats_tools/nas/mem_resolver.html">
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Memory Resolver
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="5.5" data-path="../../nats_tools/nats_top/">
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<a href="../../nats_tools/nats_top/">
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nats-top
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</a>
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<ul class="articles">
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<li class="chapter " data-level="5.5.1" data-path="../../nats_tools/nats_top/nats-top-tutorial.html">
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<a href="../../nats_tools/nats_top/nats-top-tutorial.html">
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Tutorial
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="5.6" data-path="../../nats_tools/natsbench.html">
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<a href="../../nats_tools/natsbench.html">
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nats-bench
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</a>
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</li>
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<li class="header">NATS Streaming Concepts</li>
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<li class="chapter " data-level="6.1" data-path="../intro.html">
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<a href="../intro.html">
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Introduction
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</a>
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</li>
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<li class="chapter " data-level="6.2" data-path="../relation-to-nats.html">
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<a href="../relation-to-nats.html">
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Relation to NATS
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</a>
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</li>
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<li class="chapter " data-level="6.3" data-path="../client-connections.html">
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<a href="../client-connections.html">
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Client Connections
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</a>
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</li>
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<li class="chapter " data-level="6.4" data-path="../channels/channels.html">
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<a href="../channels/channels.html">
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Channels
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.4.1" data-path="../channels/message-log.html">
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<a href="../channels/message-log.html">
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Message Log
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</a>
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</li>
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<li class="chapter " data-level="6.4.2" data-path="../channels/subscriptions/subscriptions.html">
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<a href="../channels/subscriptions/subscriptions.html">
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Subscriptions
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.4.2.1" data-path="../channels/subscriptions/regular.html">
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<a href="../channels/subscriptions/regular.html">
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Regular
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</a>
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</li>
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<li class="chapter " data-level="6.4.2.2" data-path="../channels/subscriptions/durable.html">
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<a href="../channels/subscriptions/durable.html">
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Durable
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</a>
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</li>
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<li class="chapter " data-level="6.4.2.3" data-path="../channels/subscriptions/queue-group.html">
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<a href="../channels/subscriptions/queue-group.html">
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Queue Group
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</a>
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</li>
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<li class="chapter " data-level="6.4.2.4" data-path="../channels/subscriptions/redelivery.html">
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<a href="../channels/subscriptions/redelivery.html">
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Redelivery
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.5" data-path="../store-interface.html">
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<a href="../store-interface.html">
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Store Interface
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</a>
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</li>
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<li class="chapter " data-level="6.6" data-path="../store-encryption.html">
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<a href="../store-encryption.html">
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Store Encryption
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</a>
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</li>
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<li class="chapter " data-level="6.7" data-path="../clustering/clustering.html">
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<a href="../clustering/clustering.html">
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Clustering
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.7.1" data-path="../clustering/supported-stores.html">
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<a href="../clustering/supported-stores.html">
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Supported Stores
|
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</a>
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</li>
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<li class="chapter " data-level="6.7.2" data-path="../clustering/configuration.html">
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<a href="../clustering/configuration.html">
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Configuration
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</a>
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</li>
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<li class="chapter " data-level="6.7.3" data-path="../clustering/auto-configuration.html">
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<a href="../clustering/auto-configuration.html">
|
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Auto Configuration
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</a>
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</li>
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<li class="chapter " data-level="6.7.4" data-path="../clustering/containers.html">
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<a href="../clustering/containers.html">
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|
Containers
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.8" data-path="../fault-tolerance/ft.html">
|
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|
<a href="../fault-tolerance/ft.html">
|
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Fault Tolerance
|
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</a>
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<ul class="articles">
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<li class="chapter " data-level="6.8.1" data-path="../fault-tolerance/active-server.html">
|
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<a href="../fault-tolerance/active-server.html">
|
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Active Server
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</a>
|
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</li>
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<li class="chapter " data-level="6.8.2" data-path="../fault-tolerance/standby-server.html">
|
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|
<a href="../fault-tolerance/standby-server.html">
|
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|
Standby Servers
|
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</a>
|
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</li>
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<li class="chapter " data-level="6.8.3" data-path="../fault-tolerance/shared-state.html">
|
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|
<a href="../fault-tolerance/shared-state.html">
|
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|
Shared State
|
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</a>
|
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</li>
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<li class="chapter " data-level="6.8.4" data-path="../fault-tolerance/failover.html">
|
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<a href="../fault-tolerance/failover.html">
|
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|
Failover
|
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</a>
|
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="6.9" data-path="../partitioning.html">
|
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|
<a href="../partitioning.html">
|
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|
Partitioning
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</a>
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</li>
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<li class="chapter " data-level="6.10" data-path="monitoring.html">
|
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<a href="monitoring.html">
|
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|
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|
Monitoring
|
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</a>
|
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<ul class="articles">
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<li class="chapter active" data-level="6.10.1" data-path="endpoints.html">
|
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<a href="endpoints.html">
|
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Endpoints
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</a>
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</li>
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</ul>
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</li>
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<li class="header">Developing With NATS Streaming</li>
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<li class="chapter " data-level="7.1" data-path="../../developer/streaming/">
|
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<a href="../../developer/streaming/">
|
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|
Introduction
|
|
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</a>
|
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</li>
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<li class="chapter " data-level="7.2" data-path="../../developer/streaming/connecting.html">
|
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<a href="../../developer/streaming/connecting.html">
|
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Connecting to NATS Streaming
|
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</a>
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</li>
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<li class="chapter " data-level="7.3" data-path="../../developer/streaming/publishing.html">
|
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|
<a href="../../developer/streaming/publishing.html">
|
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|
Publishing to a Channel
|
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</a>
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</li>
|
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|
<li class="chapter " data-level="7.4" data-path="../../developer/streaming/receiving.html">
|
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|
<a href="../../developer/streaming/receiving.html">
|
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|
Receiving Messages from a Channel
|
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|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="7.5" data-path="../../developer/streaming/durables.html">
|
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<a href="../../developer/streaming/durables.html">
|
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Durable Subscriptions
|
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</a>
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</li>
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|
<li class="chapter " data-level="7.6" data-path="../../developer/streaming/queues.html">
|
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|
<a href="../../developer/streaming/queues.html">
|
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|
|
|
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Queue Subscriptions
|
|
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</a>
|
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</li>
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<li class="chapter " data-level="7.7" data-path="../../developer/streaming/acks.html">
|
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<a href="../../developer/streaming/acks.html">
|
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|
|
|
Acknowledgements
|
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</a>
|
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</li>
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<li class="chapter " data-level="7.8" data-path="../../developer/streaming/protocol.html">
|
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|
<a href="../../developer/streaming/protocol.html">
|
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|
|
|
The Streaming Protocol
|
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</a>
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</li>
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<li class="header">NATS Streaming Server</li>
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<li class="chapter " data-level="8.1" data-path="../gettingstarted/changes.html">
|
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|
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<a href="../gettingstarted/changes.html">
|
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|
|
Important Changes
|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="8.2" data-path="../gettingstarted/install.html">
|
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|
<a href="../gettingstarted/install.html">
|
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|
|
|
Installing
|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="8.3" data-path="../gettingstarted/run.html">
|
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|
<a href="../gettingstarted/run.html">
|
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|
Running
|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="8.4" data-path="../configuring/configuring.html">
|
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|
<a href="../configuring/configuring.html">
|
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|
|
|
|
Configuring
|
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|
</a>
|
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<ul class="articles">
|
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<li class="chapter " data-level="8.4.1" data-path="../configuring/cmdline.html">
|
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|
<a href="../configuring/cmdline.html">
|
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|
|
|
|
Command line arguments
|
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|
</a>
|
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</li>
|
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|
<li class="chapter " data-level="8.4.2" data-path="../configuring/cfgfile.html">
|
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<a href="../configuring/cfgfile.html">
|
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|
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Configuration file
|
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</a>
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</li>
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<li class="chapter " data-level="8.4.3" data-path="../configuring/storelimits.html">
|
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<a href="../configuring/storelimits.html">
|
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|
|
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|
Store Limits
|
|
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</a>
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<ul class="articles">
|
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<li class="chapter " data-level="8.4.3.1" data-path="../configuring/storelimits.html">
|
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<a href="../configuring/storelimits.html#limits-inheritance">
|
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Limits inheritance
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="8.4.4" data-path="../configuring/persistence.html">
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<a href="../configuring/persistence.html">
|
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|
Persistence
|
|
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</a>
|
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<ul class="articles">
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<li class="chapter " data-level="8.4.4.1" data-path="../configuring/filestore.html">
|
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<a href="../configuring/filestore.html">
|
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|
File Store
|
|
|
|
</a>
|
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<ul class="articles">
|
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|
|
<li class="chapter " data-level="8.4.4.1.1" data-path="../configuring/filestore.html">
|
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|
<a href="../configuring/filestore.html#options">
|
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|
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|
Options
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</a>
|
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</li>
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<li class="chapter " data-level="8.4.4.1.2" data-path="../configuring/filestore.html">
|
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<a href="../configuring/filestore.html#recovery-errors">
|
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Recovery Errors
|
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</a>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="8.4.4.2" data-path="../configuring/sqlstore.html">
|
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<a href="../configuring/sqlstore.html">
|
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SQL Store
|
|
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|
</a>
|
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<ul class="articles">
|
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<li class="chapter " data-level="8.4.4.2.1" data-path="../configuring/sqlstore.html">
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<a href="../configuring/sqlstore.html#read-and-write-timeouts">
|
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|
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Read and Write Timeouts
|
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</a>
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</li>
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<li class="chapter " data-level="8.4.4.2.2" data-path="../configuring/sqlstore.html">
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<a href="../configuring/sqlstore.html#options">
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Options
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="8.4.5" data-path="../configuring/tls.html">
|
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<a href="../configuring/tls.html">
|
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Securing
|
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</a>
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<ul class="articles">
|
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<li class="chapter " data-level="8.4.5.1" data-path="../configuring/tls.html">
|
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|
|
<a href="../configuring/tls.html#authenticating-users">
|
|
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|
|
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Authenticating Users
|
|
|
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</a>
|
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</li>
|
|
|
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<li class="chapter " data-level="8.4.5.2" data-path="../configuring/tls.html">
|
|
|
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<a href="../configuring/tls.html#using-tls">
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TLS
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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<li class="chapter " data-level="8.5" data-path="../gettingstarted/process-signaling.html">
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<a href="../gettingstarted/process-signaling.html">
|
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Process Signaling
|
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</a>
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</li>
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<li class="chapter " data-level="8.6" data-path="../gettingstarted/windows-service.html">
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<a href="../gettingstarted/windows-service.html">
|
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Windows Service
|
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</a>
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</li>
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<li class="chapter " data-level="8.7" data-path="../../developer/streaming/embedding.html">
|
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<a href="../../developer/streaming/embedding.html">
|
|
|
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Embedding NATS Streaming Server
|
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</a>
|
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</li>
|
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<li class="chapter " data-level="8.8" data-path="../swarm.html">
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<a href="../swarm.html">
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Docker Swarm
|
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</a>
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</li>
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<li class="header">NATS Protocol</li>
|
|
|
|
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|
|
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<li class="chapter " data-level="9.1" data-path="../../nats_protocol/nats-protocol-demo.html">
|
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<a href="../../nats_protocol/nats-protocol-demo.html">
|
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|
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Protocol Demo
|
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</a>
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</li>
|
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<li class="chapter " data-level="9.2" data-path="../../nats_protocol/nats-protocol.html">
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<a href="../../nats_protocol/nats-protocol.html">
|
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Client Protocol
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</a>
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<ul class="articles">
|
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<li class="chapter " data-level="9.2.1" data-path="../../nats_protocol/nats-client-dev.html">
|
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<a href="../../nats_protocol/nats-client-dev.html">
|
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|
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|
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Developing a Client
|
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</a>
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</li>
|
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</ul>
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</li>
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<li class="chapter " data-level="9.3" data-path="../../nats_protocol/nats-server-protocol.html">
|
|
|
|
<a href="../../nats_protocol/nats-server-protocol.html">
|
|
|
|
|
|
NATS Cluster Protocol
|
|
|
|
</a>
|
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</li>
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<li>
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<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
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Published with GitBook
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<div class="book-body">
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<!-- Title -->
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<h1>
|
|
<i class="fa fa-circle-o-notch fa-spin"></i>
|
|
<a href="../.." >Endpoints</a>
|
|
</h1>
|
|
</div>
|
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<div class="page-wrapper" tabindex="-1" role="main">
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<div class="page-inner">
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<div id="book-search-results">
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<div class="search-noresults">
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<section class="normal markdown-section">
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|
|
<h3 id="endpoints"><a name="endpoints" class="plugin-anchor" href="#endpoints"><i class="fa fa-link" aria-hidden="true"></i></a>Endpoints</h3>
|
|
<p>The following sections describe each supported monitoring endpoint: serverz, storez, clientsz, and channelsz.</p>
|
|
<h4 id="serverz"><a name="serverz" class="plugin-anchor" href="#serverz"><i class="fa fa-link" aria-hidden="true"></i></a>/serverz</h4>
|
|
<p>The endpoint <a href="http://localhost:8222/streaming/serverz" target="_blank">http://localhost:8222/streaming/serverz</a> reports various general statistics.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "JEzjfVQS4JIEzM7lZmWHm9",
|
|
"version": "0.14.2",
|
|
"go": "go1.11.10",
|
|
"state": "STANDALONE",
|
|
"now": "2019-05-21T11:09:35.364637-06:00",
|
|
"start_time": "2019-05-21T11:09:24.204869-06:00",
|
|
"uptime": "11s",
|
|
"clients": 0,
|
|
"subscriptions": 0,
|
|
"channels": 0,
|
|
"total_msgs": 0,
|
|
"total_bytes": 0
|
|
}
|
|
</code></pre><p>In clustering mode, there is an additional field that indicates the RAFT role of the given node. Here is an example:</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "t9W9zbOIIi5Y9Guppxl0lF",
|
|
"version": "0.14.2",
|
|
"go": "go1.11.10",
|
|
"state": "CLUSTERED",
|
|
"role": "Follower",
|
|
"now": "2019-05-21T11:10:15.765261-06:00",
|
|
"start_time": "2019-05-21T11:10:12.21284-06:00",
|
|
"uptime": "3s",
|
|
"clients": 0,
|
|
"subscriptions": 0,
|
|
"channels": 0,
|
|
"total_msgs": 0,
|
|
"total_bytes": 0
|
|
}
|
|
</code></pre><p>The possible values are: <code>Leader</code>, <code>Follower</code> or <code>Candidate</code>.</p>
|
|
<h4 id="storez"><a name="storez" class="plugin-anchor" href="#storez"><i class="fa fa-link" aria-hidden="true"></i></a>/storez</h4>
|
|
<p>The endpoint <a href="http://localhost:8222/streaming/storez" target="_blank">http://localhost:8222/streaming/storez</a> reports information about the store.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "8AjZq57k4JY7cfKEvuZ8iF",
|
|
"now": "2019-04-16T09:57:32.857406-06:00",
|
|
"type": "MEMORY",
|
|
"limits": {
|
|
"max_channels": 100,
|
|
"max_msgs": 1000000,
|
|
"max_bytes": 1024000000,
|
|
"max_age": 0,
|
|
"max_subscriptions": 1000,
|
|
"max_inactivity": 0
|
|
},
|
|
"total_msgs": 130691,
|
|
"total_bytes": 19587140
|
|
}
|
|
</code></pre><h4 id="clientsz"><a name="clientsz" class="plugin-anchor" href="#clientsz"><i class="fa fa-link" aria-hidden="true"></i></a>/clientsz</h4>
|
|
<p>The endpoint <a href="http://localhost:8222/streaming/clientsz" target="_blank">http://localhost:8222/streaming/clientsz</a> reports more detailed information about the connected clients.</p>
|
|
<p>It uses a paging mechanism which defaults to 1024 clients.</p>
|
|
<p>You can control these via URL arguments (limit and offset). For example: <a href="http://localhost:8222/streaming/clientsz?limit=1&offset=1" target="_blank">http://localhost:8222/streaming/clientsz?limit=1&offset=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "J3Odi0wXYKWKFWz5D5uhH9",
|
|
"now": "2017-06-07T14:47:44.495254605+02:00",
|
|
"offset": 1,
|
|
"limit": 1,
|
|
"count": 1,
|
|
"total": 11,
|
|
"clients": [
|
|
{
|
|
"id": "benchmark-sub-0",
|
|
"hb_inbox": "_INBOX.jAHSY3hcL5EGFQGYmfayQK"
|
|
}
|
|
]
|
|
}
|
|
</code></pre><p>You can also report detailed subscription information on a per client basis using <code>subs=1</code>. For example: <a href="http://localhost:8222/streaming/clientsz?limit=1&offset=1&subs=1" target="_blank">http://localhost:8222/streaming/clientsz?limit=1&offset=1&subs=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "J3Odi0wXYKWKFWz5D5uhH9",
|
|
"now": "2017-06-07T14:48:06.157468748+02:00",
|
|
"offset": 1,
|
|
"limit": 1,
|
|
"count": 1,
|
|
"total": 11,
|
|
"clients": [
|
|
{
|
|
"id": "benchmark-sub-0",
|
|
"hb_inbox": "_INBOX.jAHSY3hcL5EGFQGYmfayQK",
|
|
"subscriptions": {
|
|
"foo": [
|
|
{
|
|
"client_id": "benchmark-sub-0",
|
|
"inbox": "_INBOX.jAHSY3hcL5EGFQGYmfayvC",
|
|
"ack_inbox": "_INBOX.J3Odi0wXYKWKFWz5D5uhem",
|
|
"is_durable": false,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 505597,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
</code></pre><p>You can select a specific client based on its client ID with <code>client=<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>id</span><span class="token punctuation">></span></span></code>, and get also get detailed statistics with <code>subs=1</code>. For example: <a href="http://localhost:8222/streaming/clientsz?client=me&subs=1" target="_blank">http://localhost:8222/streaming/clientsz?client=me&subs=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"id": "me",
|
|
"hb_inbox": "_INBOX.HG0uDuNtAPxJQ1lVjIC2sr",
|
|
"subscriptions": {
|
|
"foo": [
|
|
{
|
|
"client_id": "me",
|
|
"inbox": "_INBOX.HG0uDuNtAPxJQ1lVjIC389",
|
|
"ack_inbox": "_INBOX.Q9iH2gsDPN57ZEvqswiYSL",
|
|
"is_durable": false,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 0,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
}
|
|
]
|
|
}
|
|
}
|
|
</code></pre><h4 id="channelsz"><a name="channelsz" class="plugin-anchor" href="#channelsz"><i class="fa fa-link" aria-hidden="true"></i></a>/channelsz</h4>
|
|
<p>The endpoint <a href="http://localhost:8222/streaming/channelsz" target="_blank">http://localhost:8222/streaming/channelsz</a> reports the list of channels.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "J3Odi0wXYKWKFWz5D5uhH9",
|
|
"now": "2017-06-07T14:48:41.680592041+02:00",
|
|
"offset": 0,
|
|
"limit": 1024,
|
|
"count": 2,
|
|
"total": 2,
|
|
"names": [
|
|
"bar"
|
|
"foo"
|
|
]
|
|
}
|
|
</code></pre><p>It uses a paging mechanism which defaults to 1024 channels.</p>
|
|
<p>You can control these via URL arguments (limit and offset). For example: <a href="http://localhost:8222/streaming/channelsz?limit=1&offset=1" target="_blank">http://localhost:8222/streaming/channelsz?limit=1&offset=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "J3Odi0wXYKWKFWz5D5uhH9",
|
|
"now": "2017-06-07T14:48:41.680592041+02:00",
|
|
"offset": 1,
|
|
"limit": 1,
|
|
"count": 1,
|
|
"total": 2,
|
|
"names": [
|
|
"foo"
|
|
]
|
|
}
|
|
</code></pre><p>You can also get the list of subscriptions with <code>subs=1</code>. For example: <a href="http://localhost:8222/streaming/channelsz?limit=1&offset=0&subs=1" target="_blank">http://localhost:8222/streaming/channelsz?limit=1&offset=0&subs=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"cluster_id": "test-cluster",
|
|
"server_id": "J3Odi0wXYKWKFWz5D5uhH9",
|
|
"now": "2017-06-07T15:01:02.166116959+02:00",
|
|
"offset": 0,
|
|
"limit": 1,
|
|
"count": 1,
|
|
"total": 2,
|
|
"channels": [
|
|
{
|
|
"name": "bar",
|
|
"msgs": 0,
|
|
"bytes": 0,
|
|
"first_seq": 0,
|
|
"last_seq": 0,
|
|
"subscriptions": [
|
|
{
|
|
"client_id": "me",
|
|
"inbox": "_INBOX.S7kTJjOcToXiJAzGWgINit",
|
|
"ack_inbox": "_INBOX.Y04G5pZxlint3yPXrSTjTV",
|
|
"is_durable": false,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 0,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
</code></pre><p>You can select a specific channel based on its name with <code>channel=name</code>. For example: <a href="http://localhost:8222/streaming/channelsz?channel=foo" target="_blank">http://localhost:8222/streaming/channelsz?channel=foo</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"name": "foo",
|
|
"msgs": 649234,
|
|
"bytes": 97368590,
|
|
"first_seq": 1,
|
|
"last_seq": 649234
|
|
}
|
|
</code></pre><p>And again, you can get detailed subscriptions with <code>subs=1</code>. For example: <a href="http://localhost:8222/streaming/channelsz?channel=foo&subs=1" target="_blank">http://localhost:8222/streaming/channelsz?channel=foo&subs=1</a>.</p>
|
|
<pre class="language-"><code>{
|
|
"name": "foo",
|
|
"msgs": 704770,
|
|
"bytes": 105698990,
|
|
"first_seq": 1,
|
|
"last_seq": 704770,
|
|
"subscriptions": [
|
|
{
|
|
"client_id": "me",
|
|
"inbox": "_INBOX.jAHSY3hcL5EGFQGYmfayvC",
|
|
"ack_inbox": "_INBOX.J3Odi0wXYKWKFWz5D5uhem",
|
|
"is_durable": false,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 704770,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
},
|
|
{
|
|
"client_id": "me2",
|
|
"inbox": "_INBOX.jAHSY3hcL5EGFQGYmfaywG",
|
|
"ack_inbox": "_INBOX.J3Odi0wXYKWKFWz5D5uhjV",
|
|
"is_durable": false,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 704770,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
},
|
|
(...)
|
|
]
|
|
}
|
|
</code></pre><p>For durables that are currently running, the <code>is_offline</code> field is set to <code>false</code>. Here is an example:</p>
|
|
<pre class="language-"><code>{
|
|
"name": "foo",
|
|
"msgs": 0,
|
|
"bytes": 0,
|
|
"first_seq": 0,
|
|
"last_seq": 0,
|
|
"subscriptions": [
|
|
{
|
|
"client_id": "me",
|
|
"inbox": "_INBOX.P23kNGFnwC7KRg3jIMB3IL",
|
|
"ack_inbox": "_STAN.ack.pLyMpEyg7dgGZBS7jGXC02.foo.pLyMpEyg7dgGZBS7jGXCaw",
|
|
"durable_name": "dur",
|
|
"is_durable": true,
|
|
"is_offline": false,
|
|
"max_inflight": 1024,
|
|
"ack_wait": 30,
|
|
"last_sent": 0,
|
|
"pending_count": 0,
|
|
"is_stalled": false
|
|
}
|
|
]
|
|
}
|
|
</code></pre><p>When that same durable goes offline, <code>is_offline</code> is be set to <code>true</code>. Although the client is possibly no longer connected (and would not appear in the <code>clientsz</code> endpoint), the <code>client_id</code> field is still displayed here.</p>
|
|
<pre class="language-"><code>{
|
|
"name": "foo",
|
|
"msgs": 0,
|
|
"bytes": 0,
|
|
"first_seq": 0,
|
|
"last_seq": 0,
|
|
"subscriptions": [
|
|
{
|
|
"client_id": "me",
|
|
"inbox": "_INBOX.P23kNGFnwC7KRg3jIMB3IL",
|
|
"ack_inbox": "_STAN.ack.pLyMpEyg7dgGZBS7jGXC02.foo.pLyMpEyg7dgGZBS7jGXCaw",
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"durable_name": "dur",
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"is_durable": true,
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"is_offline": true,
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"max_inflight": 1024,
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"ack_wait": 30,
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"last_sent": 0,
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"pending_count": 0,
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"is_stalled": false
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}
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]
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}
|
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</code></pre>
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