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Introduction
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What's New in 2.0
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FAQ
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nats.io
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What is NATS
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Subject-Based Messaging
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Publish-Subscribe
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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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<li class="header">Developing With NATS</li>
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<a href="../">
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Introduction
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Connecting
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Connecting to the Default Server
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</a>
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Connecting to a Specific Server
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</a>
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Connecting to a Cluster
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</a>
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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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</a>
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</li>
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<li class="chapter " data-level="3.2.7" data-path="../connecting/noecho.html">
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<a href="../connecting/noecho.html">
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Turning Off Echo'd Messages
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</a>
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</li>
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</ul>
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<li class="chapter " data-level="3.3" data-path="../reconnect/intro.html">
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<a href="../reconnect/intro.html">
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Automatic Reconnections
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</a>
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<ul class="articles">
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<a href="../reconnect/disable.html">
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Disabling Reconnect
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</a>
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<li class="chapter " data-level="3.3.2" data-path="../reconnect/max.html">
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<a href="../reconnect/max.html">
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Set the Number of Reconnect Attempts
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</a>
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</li>
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<li class="chapter " data-level="3.3.3" data-path="../reconnect/wait.html">
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<a href="../reconnect/wait.html">
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Pausing Between Reconnect Attempts
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</a>
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</li>
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<li class="chapter " data-level="3.3.4" data-path="../reconnect/random.html">
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<a href="../reconnect/random.html">
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Avoiding the Thundering Herd
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</a>
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</li>
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<li class="chapter " data-level="3.3.5" data-path="../reconnect/events.html">
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<a href="../reconnect/events.html">
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Listening for Reconnect Events
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</a>
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</li>
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<li class="chapter " data-level="3.3.6" data-path="../reconnect/buffer.html">
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<a href="../reconnect/buffer.html">
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Buffering Messages During Reconnect Attempts
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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="3.4" data-path="intro.html">
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<a href="intro.html">
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Securing Connections
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.4.1" data-path="userpass.html">
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<a href="userpass.html">
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Authenticating with a User and Password
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</a>
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</li>
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<li class="chapter " data-level="3.4.2" data-path="token.html">
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<a href="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="nkey.html">
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<a href="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 active" data-level="3.4.4" data-path="creds.html">
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<a href="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="tls.html">
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<a href="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="../receiving/intro.html">
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<a href="../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="../receiving/sync.html">
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<a href="../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="../receiving/async.html">
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<a href="../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="../receiving/unsubscribing.html">
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<a href="../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="../receiving/unsub_after.html">
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<a href="../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="../receiving/reply.html">
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<a href="../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="../receiving/wildcards.html">
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<a href="../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="../receiving/queues.html">
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<a href="../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="../receiving/drain.html">
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<a href="../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="../receiving/structure.html">
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<a href="../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="../sending/intro.html">
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<a href="../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="../sending/replyto.html">
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<a href="../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="../sending/request_reply.html">
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<a href="../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="../sending/caches.html">
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<a href="../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="../sending/structure.html">
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<a href="../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="../events/intro.html">
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<a href="../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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<li class="chapter " data-level="3.7.1" data-path="../events/events.html">
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<a href="../events/events.html">
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Listen for Connection Events
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</a>
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</li>
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<li class="chapter " data-level="3.7.2" data-path="../events/slow.html">
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<a href="../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="../tutorials/intro.html">
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<a href="../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="../tutorials/pubsub.html">
|
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<a href="../tutorials/pubsub.html">
|
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|
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|
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Explore NATS Pub/Sub
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</a>
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</li>
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<li class="chapter " data-level="3.8.2" data-path="../tutorials/reqreply.html">
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<a href="../tutorials/reqreply.html">
|
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|
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Explore NATS Request/Reply
|
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</a>
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</li>
|
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|
|
<li class="chapter " data-level="3.8.3" data-path="../tutorials/queues.html">
|
|
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<a href="../tutorials/queues.html">
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|
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|
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Explore NATS Queueing
|
|
|
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</a>
|
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</li>
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|
|
<li class="chapter " data-level="3.8.4" data-path="../tutorials/custom_dialer.html">
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|
|
|
<a href="../tutorials/custom_dialer.html">
|
|
|
|
|
|
Advanced Connect and Custom Dialer in Go
|
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|
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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">NATS Server</li>
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|
|
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<li class="chapter " data-level="4.1" data-path="../../nats_server/installation.html">
|
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|
<a href="../../nats_server/installation.html">
|
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|
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|
Installing
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</a>
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</li>
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|
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<li class="chapter " data-level="4.2" data-path="../../nats_server/running.html">
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<a href="../../nats_server/running.html">
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Running
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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="4.2.1" data-path="../../nats_server/windows_srv.html">
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|
|
|
<a href="../../nats_server/windows_srv.html">
|
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|
|
|
|
Window Service
|
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|
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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="4.3" data-path="../../nats_server/clients.html">
|
|
|
|
<a href="../../nats_server/clients.html">
|
|
|
|
|
|
Clients
|
|
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</a>
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</li>
|
|
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|
<li class="chapter " data-level="4.4" data-path="../../nats_server/flags.html">
|
|
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|
<a href="../../nats_server/flags.html">
|
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|
|
|
|
Flags
|
|
|
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</a>
|
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|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="4.5" data-path="../../nats_server/configuration.html">
|
|
|
|
<a href="../../nats_server/configuration.html">
|
|
|
|
|
|
Configuration
|
|
|
|
</a>
|
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|
|
|
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|
|
<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>
|
|
|
|
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|
|
<ul class="articles">
|
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|
|
<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>
|
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|
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|
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<ul class="articles">
|
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|
|
<li class="chapter " data-level="4.5.1.2.1" data-path="../../nats_server/tokens.html">
|
|
|
|
<a href="../../nats_server/tokens.html">
|
|
|
|
|
|
Tokens
|
|
|
|
</a>
|
|
|
|
|
|
|
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</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>
|
|
|
|
<li class="chapter " data-level="5.3.5" data-path="../../nats_tools/nsc/revocation.html">
|
|
|
|
<a href="../../nats_tools/nsc/revocation.html">
|
|
|
|
|
|
Revocation
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.3.6" data-path="../../nats_tools/nsc/managed.html">
|
|
|
|
<a href="../../nats_tools/nsc/managed.html">
|
|
|
|
|
|
Managed Operators
|
|
|
|
</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>
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<ul class="articles">
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<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="../../nats_streaming/intro.html">
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<a href="../../nats_streaming/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="../../nats_streaming/relation-to-nats.html">
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<a href="../../nats_streaming/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="../../nats_streaming/client-connections.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/channels.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/message-log.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/subscriptions/subscriptions.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/subscriptions/regular.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/subscriptions/durable.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/subscriptions/queue-group.html">
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<a href="../../nats_streaming/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="../../nats_streaming/channels/subscriptions/redelivery.html">
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<a href="../../nats_streaming/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="../../nats_streaming/store-interface.html">
|
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|
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<a href="../../nats_streaming/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="../../nats_streaming/store-encryption.html">
|
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<a href="../../nats_streaming/store-encryption.html">
|
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Store Encryption
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|
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</a>
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</li>
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|
<li class="chapter " data-level="6.7" data-path="../../nats_streaming/clustering/clustering.html">
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|
|
<a href="../../nats_streaming/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="../../nats_streaming/clustering/supported-stores.html">
|
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|
<a href="../../nats_streaming/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="../../nats_streaming/clustering/configuration.html">
|
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<a href="../../nats_streaming/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="../../nats_streaming/clustering/auto-configuration.html">
|
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|
<a href="../../nats_streaming/clustering/auto-configuration.html">
|
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|
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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="../../nats_streaming/clustering/containers.html">
|
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|
<a href="../../nats_streaming/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="../../nats_streaming/fault-tolerance/ft.html">
|
|
|
|
<a href="../../nats_streaming/fault-tolerance/ft.html">
|
|
|
|
|
|
Fault Tolerance
|
|
|
|
</a>
|
|
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<ul class="articles">
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<li class="chapter " data-level="6.8.1" data-path="../../nats_streaming/fault-tolerance/active-server.html">
|
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|
|
<a href="../../nats_streaming/fault-tolerance/active-server.html">
|
|
|
|
|
|
Active Server
|
|
|
|
</a>
|
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</li>
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|
<li class="chapter " data-level="6.8.2" data-path="../../nats_streaming/fault-tolerance/standby-server.html">
|
|
|
|
<a href="../../nats_streaming/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="../../nats_streaming/fault-tolerance/shared-state.html">
|
|
|
|
<a href="../../nats_streaming/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="../../nats_streaming/fault-tolerance/failover.html">
|
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|
|
<a href="../../nats_streaming/fault-tolerance/failover.html">
|
|
|
|
|
|
Failover
|
|
|
|
</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="../../nats_streaming/partitioning.html">
|
|
|
|
<a href="../../nats_streaming/partitioning.html">
|
|
|
|
|
|
Partitioning
|
|
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</a>
|
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</li>
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<li class="chapter " data-level="6.10" data-path="../../nats_streaming/monitoring/monitoring.html">
|
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|
|
<a href="../../nats_streaming/monitoring/monitoring.html">
|
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|
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|
|
Monitoring
|
|
|
|
</a>
|
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<ul class="articles">
|
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<li class="chapter " data-level="6.10.1" data-path="../../nats_streaming/monitoring/endpoints.html">
|
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|
<a href="../../nats_streaming/monitoring/endpoints.html">
|
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|
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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="../streaming/">
|
|
|
|
<a href="../streaming/">
|
|
|
|
|
|
Introduction
|
|
|
|
</a>
|
|
|
|
|
|
|
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</li>
|
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|
<li class="chapter " data-level="7.2" data-path="../streaming/connecting.html">
|
|
|
|
<a href="../streaming/connecting.html">
|
|
|
|
|
|
Connecting to NATS Streaming
|
|
|
|
</a>
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="7.3" data-path="../streaming/publishing.html">
|
|
|
|
<a href="../streaming/publishing.html">
|
|
|
|
|
|
Publishing to a Channel
|
|
|
|
</a>
|
|
|
|
|
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|
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</li>
|
|
|
|
<li class="chapter " data-level="7.4" data-path="../streaming/receiving.html">
|
|
|
|
<a href="../streaming/receiving.html">
|
|
|
|
|
|
Receiving Messages from a Channel
|
|
|
|
</a>
|
|
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="7.5" data-path="../streaming/durables.html">
|
|
|
|
<a href="../streaming/durables.html">
|
|
|
|
|
|
Durable Subscriptions
|
|
|
|
</a>
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="7.6" data-path="../streaming/queues.html">
|
|
|
|
<a href="../streaming/queues.html">
|
|
|
|
|
|
Queue Subscriptions
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="7.7" data-path="../streaming/acks.html">
|
|
|
|
<a href="../streaming/acks.html">
|
|
|
|
|
|
Acknowledgements
|
|
|
|
</a>
|
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|
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|
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|
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</li>
|
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|
|
<li class="chapter " data-level="7.8" data-path="../streaming/protocol.html">
|
|
|
|
<a href="../streaming/protocol.html">
|
|
|
|
|
|
The Streaming Protocol
|
|
|
|
</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="../../nats_streaming/gettingstarted/changes.html">
|
|
|
|
<a href="../../nats_streaming/gettingstarted/changes.html">
|
|
|
|
|
|
Important Changes
|
|
|
|
</a>
|
|
|
|
|
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</li>
|
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|
|
<li class="chapter " data-level="8.2" data-path="../../nats_streaming/gettingstarted/install.html">
|
|
|
|
<a href="../../nats_streaming/gettingstarted/install.html">
|
|
|
|
|
|
Installing
|
|
|
|
</a>
|
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|
|
|
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</li>
|
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|
|
<li class="chapter " data-level="8.3" data-path="../../nats_streaming/gettingstarted/run.html">
|
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|
|
<a href="../../nats_streaming/gettingstarted/run.html">
|
|
|
|
|
|
Running
|
|
|
|
</a>
|
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|
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</li>
|
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|
<li class="chapter " data-level="8.4" data-path="../../nats_streaming/configuring/configuring.html">
|
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|
|
<a href="../../nats_streaming/configuring/configuring.html">
|
|
|
|
|
|
Configuring
|
|
|
|
</a>
|
|
|
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|
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|
|
<ul class="articles">
|
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|
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|
|
<li class="chapter " data-level="8.4.1" data-path="../../nats_streaming/configuring/cmdline.html">
|
|
|
|
<a href="../../nats_streaming/configuring/cmdline.html">
|
|
|
|
|
|
Command line arguments
|
|
|
|
</a>
|
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|
|
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</li>
|
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|
|
<li class="chapter " data-level="8.4.2" data-path="../../nats_streaming/configuring/cfgfile.html">
|
|
|
|
<a href="../../nats_streaming/configuring/cfgfile.html">
|
|
|
|
|
|
Configuration file
|
|
|
|
</a>
|
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|
|
|
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</li>
|
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|
<li class="chapter " data-level="8.4.3" data-path="../../nats_streaming/configuring/storelimits.html">
|
|
|
|
<a href="../../nats_streaming/configuring/storelimits.html">
|
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|
|
|
|
Store Limits
|
|
|
|
</a>
|
|
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|
<ul class="articles">
|
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|
<li class="chapter " data-level="8.4.3.1" data-path="../../nats_streaming/configuring/storelimits.html">
|
|
|
|
<a href="../../nats_streaming/configuring/storelimits.html#limits-inheritance">
|
|
|
|
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|
Limits inheritance
|
|
|
|
</a>
|
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</li>
|
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|
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</ul>
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</li>
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|
<li class="chapter " data-level="8.4.4" data-path="../../nats_streaming/configuring/persistence.html">
|
|
|
|
<a href="../../nats_streaming/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="../../nats_streaming/configuring/filestore.html">
|
|
|
|
<a href="../../nats_streaming/configuring/filestore.html">
|
|
|
|
|
|
File Store
|
|
|
|
</a>
|
|
|
|
|
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|
<ul class="articles">
|
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|
|
|
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<li class="chapter " data-level="8.4.4.1.1" data-path="../../nats_streaming/configuring/filestore.html">
|
|
|
|
<a href="../../nats_streaming/configuring/filestore.html#options">
|
|
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<li class="header">NATS Protocol</li>
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Developing a Client
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NATS Cluster Protocol
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<a href="../.." >Authenticating with a Credentials File</a>
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<h1 id="authenticating-with-user-credentials-file"><a name="authenticating-with-user-credentials-file" class="plugin-anchor" href="#authenticating-with-user-credentials-file"><i class="fa fa-link" aria-hidden="true"></i></a>Authenticating with User Credentials File</h1>
|
|
<p>The 2.0 version of NATS server introduced the idea of JWT-based authentication. Clients interact with this new scheme using a user JWT and the private key from an NKey pair. To help make connecting with a JWT easier, the client libraries support the concept of a credentials file. This file contains both the private key and the JWT and can be generated with the <code>nsc</code> tool. The contents will look like the following and should be protected because it contains a private key. This creds file is unused and only for example purposes.</p>
|
|
<pre class="language-"><code class="lang-ascii">-----BEGIN NATS USER JWT-----
|
|
eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.eyJqdGkiOiJUVlNNTEtTWkJBN01VWDNYQUxNUVQzTjRISUw1UkZGQU9YNUtaUFhEU0oyWlAzNkVMNVJBIiwiaWF0IjoxNTU4MDQ1NTYyLCJpc3MiOiJBQlZTQk0zVTQ1REdZRVVFQ0tYUVM3QkVOSFdHN0tGUVVEUlRFSEFKQVNPUlBWV0JaNEhPSUtDSCIsIm5hbWUiOiJvbWVnYSIsInN1YiI6IlVEWEIyVk1MWFBBU0FKN1pEVEtZTlE3UU9DRldTR0I0Rk9NWVFRMjVIUVdTQUY3WlFKRUJTUVNXIiwidHlwZSI6InVzZXIiLCJuYXRzIjp7InB1YiI6e30sInN1YiI6e319fQ.6TQ2ilCDb6m2ZDiJuj_D_OePGXFyN3Ap2DEm3ipcU5AhrWrNvneJryWrpgi_yuVWKo1UoD5s8bxlmwypWVGFAA
|
|
------END NATS USER JWT------
|
|
|
|
************************* IMPORTANT *************************
|
|
NKEY Seed printed below can be used to sign and prove identity.
|
|
NKEYs are sensitive and should be treated as secrets.
|
|
|
|
-----BEGIN USER NKEY SEED-----
|
|
SUAOY5JZ2WJKVR4UO2KJ2P3SW6FZFNWEOIMAXF4WZEUNVQXXUOKGM55CYE
|
|
------END USER NKEY SEED------
|
|
|
|
*************************************************************
|
|
</code></pre>
|
|
<p>Given a creds file, a client can authenticate as a specific user belonging to a specific account:</p>
|
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<div class="tab-wrap">
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<input type="radio" id="connect_creds_go" name="connect_creds" class="tab" checked>
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<label for="connect_creds_go" class="api-lang" data-language="go">Go</label>
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<input type="radio" id="connect_creds_java" name="connect_creds" class="tab">
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<label for="connect_creds_java" class="api-lang" data-language="java">Java</label>
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<input type="radio" id="connect_creds_js" name="connect_creds" class="tab">
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<label for="connect_creds_js" class="api-lang" data-language="js">JavaScript</label>
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<input type="radio" id="connect_creds_py" name="connect_creds" class="tab">
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<label for="connect_creds_py" class="api-lang" data-language="py">Python</label>
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<input type="radio" id="connect_creds_ts" name="connect_creds" class="tab">
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<label for="connect_creds_ts" class="api-lang" data-language="ts">TypeScript</label>
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<div class="tab__content">
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<pre id="connect_creds_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/connect_creds/main.go#L10-19"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-go">nc<span class="token punctuation">,</span> err <span class="token operator">:=</span> nats<span class="token punctuation">.</span><span class="token function">Connect</span><span class="token punctuation">(</span><span class="token string">"127.0.0.1"</span><span class="token punctuation">,</span> nats<span class="token punctuation">.</span><span class="token function">UserCredentials</span><span class="token punctuation">(</span><span class="token string">"path_to_creds_file"</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
|
|
<span class="token keyword">if</span> err <span class="token operator">!=</span> <span class="token boolean">nil</span> <span class="token punctuation">{</span>
|
|
log<span class="token punctuation">.</span><span class="token function">Fatal</span><span class="token punctuation">(</span>err<span class="token punctuation">)</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token keyword">defer</span> nc<span class="token punctuation">.</span><span class="token function">Close</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
|
|
|
<span class="token comment">// Do something with the connection</span>
|
|
|
|
</code></pre>
|
|
</div>
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<div class="tab__content">
|
|
<pre id="connect_creds_java_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/java-nats-examples/blob/master/src/main/java/io/nats/examples/ConnectCreds.java#L11-21"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-java"><span class="token class-name">Options</span> options <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Options</span><span class="token punctuation">.</span><span class="token class-name">Builder</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>
|
|
<span class="token function">server</span><span class="token punctuation">(</span><span class="token string">"nats://localhost:4222"</span><span class="token punctuation">)</span><span class="token punctuation">.</span>
|
|
<span class="token function">authHandler</span><span class="token punctuation">(</span><span class="token class-name">Nats</span><span class="token punctuation">.</span><span class="token function">credentials</span><span class="token punctuation">(</span><span class="token string">"path_to_creds_file"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span>
|
|
<span class="token function">build</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token class-name">Connection</span> nc <span class="token operator">=</span> <span class="token class-name">Nats</span><span class="token punctuation">.</span><span class="token function">connect</span><span class="token punctuation">(</span>options<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
|
|
<span class="token comment">// Do something with the connection</span>
|
|
|
|
nc<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
</code></pre>
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</div>
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<div class="tab__content">
|
|
<pre id="connect_creds_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/auth_examples.js#L192-200"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript"><span class="token comment">// credentials file contains the JWT and the secret signing key</span>
|
|
<span class="token keyword">let</span> credsFile <span class="token operator">=</span> path<span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span>confDir<span class="token punctuation">,</span> <span class="token string">'credsfile.creds'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
|
|
<span class="token keyword">let</span> nc <span class="token operator">=</span> <span class="token constant">NATS</span><span class="token punctuation">.</span><span class="token function">connect</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
|
url<span class="token punctuation">:</span> server<span class="token punctuation">.</span>nats<span class="token punctuation">,</span>
|
|
userCreds<span class="token punctuation">:</span> credsFile
|
|
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
</code></pre>
|
|
</div>
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|
|
|
<div class="tab__content">
|
|
<pre id="connect_creds_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/connect_creds.py#L5-20"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-python">nc <span class="token operator">=</span> NATS<span class="token punctuation">(</span><span class="token punctuation">)</span>
|
|
|
|
<span class="token keyword">async</span> <span class="token keyword">def</span> <span class="token function">error_cb</span><span class="token punctuation">(</span>e<span class="token punctuation">)</span><span class="token punctuation">:</span>
|
|
<span class="token keyword">print</span><span class="token punctuation">(</span><span class="token string">"Error:"</span><span class="token punctuation">,</span> e<span class="token punctuation">)</span>
|
|
|
|
<span class="token keyword">await</span> nc<span class="token punctuation">.</span>connect<span class="token punctuation">(</span><span class="token string">"nats://localhost:4222"</span><span class="token punctuation">,</span>
|
|
user_credentials<span class="token operator">=</span><span class="token string">"path_to_creds_file"</span><span class="token punctuation">,</span>
|
|
error_cb<span class="token operator">=</span>error_cb<span class="token punctuation">,</span>
|
|
<span class="token punctuation">)</span>
|
|
|
|
<span class="token comment"># Do something with the connection</span>
|
|
|
|
<span class="token keyword">await</span> nc<span class="token punctuation">.</span>close<span class="token punctuation">(</span><span class="token punctuation">)</span>
|
|
|
|
</code></pre>
|
|
</div>
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|
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<div class="tab__content">
|
|
<pre id="connect_creds_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/auth_examples.ts#L160-168"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript"><span class="token comment">// credentials file contains the JWT and the secret signing key</span>
|
|
<span class="token keyword">let</span> credsFile <span class="token operator">=</span> path<span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span>confDir<span class="token punctuation">,</span> <span class="token string">'credsfile.creds'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
|
|
<span class="token keyword">let</span> nc <span class="token operator">=</span> <span class="token keyword">await</span> <span class="token function">connect</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
|
|
url<span class="token punctuation">:</span> server<span class="token punctuation">.</span>nats<span class="token punctuation">,</span>
|
|
userCreds<span class="token punctuation">:</span> credsFile
|
|
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
</code></pre>
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