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Window Service
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Flags
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Securing NATS
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Enabling TLS
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Authentication
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Tokens
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TLS Authentication
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NKeys
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Accounts
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Authentication Timeout
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Authorization
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Clustering
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Configuration
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TLS Authentication
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Gateways
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Configuration
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Leaf Nodes
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Configuration
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Logging
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Monitoring
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Managing A NATS Server
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</a>
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Upgrading a Cluster
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</a>
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</li>
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<a href="../../nats_admin/slow_consumers.html">
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Slow Consumers
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</a>
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<li class="chapter " data-level="2.6.3" data-path="../../nats_admin/signals.html">
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<a href="../../nats_admin/signals.html">
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Signals
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</a>
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<li class="chapter " data-level="2.6.4" data-path="../../sys_accounts/">
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<a href="../../sys_accounts/">
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System Accounts
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<ul class="articles">
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<a href="../../sys_accounts/sys_accounts.html">
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Configuration
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</a>
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<li class="chapter " data-level="2.7" data-path="../../nats_docker/">
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<a href="../../nats_docker/">
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NATS and Docker
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</a>
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<ul class="articles">
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<li class="chapter " data-level="2.7.1" data-path="../../nats_docker/tutorial.html">
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<a href="../../nats_docker/tutorial.html">
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Tutorial
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</a>
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<li class="chapter " data-level="2.7.2" data-path="../../nats_docker/docker_swarm.html">
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<a href="../../nats_docker/docker_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 Streaming Server</li>
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<li class="chapter " data-level="3.1" data-path="../../nats_streaming/nats-streaming-intro.html">
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<a href="../../nats_streaming/nats-streaming-intro.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="3.2" data-path="../../nats_streaming/nats-streaming-install.html">
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<a href="../../nats_streaming/nats-streaming-install.html">
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Installing
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</a>
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<ul class="articles">
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<li class="chapter " data-level="3.2.1" data-path="../../nats_streaming/nats-streaming-tls.html">
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<a href="../../nats_streaming/nats-streaming-tls.html">
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Securing
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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="3.3" data-path="../../nats_streaming/nats-streaming-protocol.html">
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<a href="../../nats_streaming/nats-streaming-protocol.html">
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Protocol
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</a>
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</li>
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<li class="chapter " data-level="3.4" data-path="../../nats_streaming/nats-streaming-swarm.html">
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<a href="../../nats_streaming/nats-streaming-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 Tools</li>
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<li class="chapter " data-level="4.1" data-path="../../nats_tools/mkpasswd.html">
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<a href="../../nats_tools/mkpasswd.html">
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mkpasswd
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</a>
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</li>
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<li class="chapter " data-level="4.2" data-path="../../nats_tools/nk.html">
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<a href="../../nats_tools/nk.html">
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nk
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</a>
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</li>
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<li class="chapter " data-level="4.3" data-path="../../nats_tools/nsc/">
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<a href="../../nats_tools/nsc/">
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nsc
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</a>
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<ul class="articles">
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<li class="chapter " data-level="4.3.1" data-path="../../nats_tools/nsc/nsc.html">
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<a href="../../nats_tools/nsc/nsc.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="4.3.2" data-path="../../nats_tools/nsc/streams.html">
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<a href="../../nats_tools/nsc/streams.html">
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Streams
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</a>
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</li>
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<li class="chapter " data-level="4.3.3" data-path="../../nats_tools/nsc/services.html">
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<a href="../../nats_tools/nsc/services.html">
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Services
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</a>
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</li>
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<li class="chapter " data-level="4.3.4" data-path="../../nats_tools/nsc/signing_keys.html">
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<a href="../../nats_tools/nsc/signing_keys.html">
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Signing Keys
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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="4.4" data-path="../../nats_tools/nas/">
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<a href="../../nats_tools/nas/">
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nats-account-server
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</a>
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<ul class="articles">
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<li class="chapter " data-level="4.4.1" 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="4.4.2" 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="4.4.3" 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="4.5" 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="4.5.1" data-path="../../nats_tools/nats_top/tutorial.html">
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<a href="../../nats_tools/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="4.6" 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">Developing With NATS</li>
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<li class="chapter " data-level="5.1" data-path="../">
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<a href="../">
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Introduction
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</a>
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</li>
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<li class="chapter " data-level="5.2" data-path="intro.html">
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<a href="intro.html">
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Concepts
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</a>
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<ul class="articles">
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<li class="chapter " data-level="5.2.1" data-path="subjects.html">
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<a href="subjects.html">
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Subject-Based Messaging
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</a>
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</li>
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<li class="chapter " data-level="5.2.2" data-path="pubsub.html">
|
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<a href="pubsub.html">
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Publish-Subscribe
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</a>
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</li>
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<li class="chapter " data-level="5.2.3" data-path="reqreply.html">
|
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<a href="reqreply.html">
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Request-Reply
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|
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</a>
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</li>
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<li class="chapter active" data-level="5.2.4" data-path="queue.html">
|
|
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|
<a href="queue.html">
|
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|
|
Queue Groups
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</a>
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</li>
|
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<li class="chapter " data-level="5.2.5" data-path="acks.html">
|
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<a href="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="5.2.6" data-path="seq_num.html">
|
|
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|
<a href="seq_num.html">
|
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|
|
Sequence Numbers
|
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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="5.3" data-path="../connecting/intro.html">
|
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<a href="../connecting/intro.html">
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Connecting
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</a>
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<ul class="articles">
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<li class="chapter " data-level="5.3.1" data-path="../connecting/default_server.html">
|
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<a href="../connecting/default_server.html">
|
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|
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|
|
Connecting to the Default Server
|
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</a>
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</li>
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|
<li class="chapter " data-level="5.3.2" data-path="../connecting/specific_server.html">
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<a href="../connecting/specific_server.html">
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|
Connecting to a Specific Server
|
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|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="5.3.3" data-path="../connecting/cluster.html">
|
|
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|
<a href="../connecting/cluster.html">
|
|
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|
|
|
Connecting to a Cluster
|
|
|
|
</a>
|
|
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</li>
|
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|
|
<li class="chapter " data-level="5.3.4" data-path="../connecting/connect_timeout.html">
|
|
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|
<a href="../connecting/connect_timeout.html">
|
|
|
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|
|
Setting a Connect Timeout
|
|
|
|
</a>
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="5.3.5" data-path="../connecting/pingpong.html">
|
|
|
|
<a href="../connecting/pingpong.html">
|
|
|
|
|
|
Ping/Pong Protocol
|
|
|
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</a>
|
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</li>
|
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|
<li class="chapter " data-level="5.3.6" data-path="../connecting/protocol.html">
|
|
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|
<a href="../connecting/protocol.html">
|
|
|
|
|
|
Controlling the Client/Server Protocol
|
|
|
|
</a>
|
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</li>
|
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|
|
<li class="chapter " data-level="5.3.7" data-path="../connecting/noecho.html">
|
|
|
|
<a href="../connecting/noecho.html">
|
|
|
|
|
|
Turning Off Echo'd Messages
|
|
|
|
</a>
|
|
|
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|
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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="5.4" data-path="../reconnect/intro.html">
|
|
|
|
<a href="../reconnect/intro.html">
|
|
|
|
|
|
Automatic Reconnections
|
|
|
|
</a>
|
|
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<ul class="articles">
|
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<li class="chapter " data-level="5.4.1" data-path="../reconnect/disable.html">
|
|
|
|
<a href="../reconnect/disable.html">
|
|
|
|
|
|
Disabling Reconnect
|
|
|
|
</a>
|
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="5.4.2" data-path="../reconnect/max.html">
|
|
|
|
<a href="../reconnect/max.html">
|
|
|
|
|
|
Set the Number of Reconnect Attempts
|
|
|
|
</a>
|
|
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</li>
|
|
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|
<li class="chapter " data-level="5.4.3" data-path="../reconnect/wait.html">
|
|
|
|
<a href="../reconnect/wait.html">
|
|
|
|
|
|
Pausing Between Reconnect Attempts
|
|
|
|
</a>
|
|
|
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|
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|
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</li>
|
|
|
|
<li class="chapter " data-level="5.4.4" data-path="../reconnect/random.html">
|
|
|
|
<a href="../reconnect/random.html">
|
|
|
|
|
|
Avoiding the Thundering Herd
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.4.5" data-path="../reconnect/events.html">
|
|
|
|
<a href="../reconnect/events.html">
|
|
|
|
|
|
Listening for Reconnect Events
|
|
|
|
</a>
|
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</li>
|
|
|
|
<li class="chapter " data-level="5.4.6" data-path="../reconnect/buffer.html">
|
|
|
|
<a href="../reconnect/buffer.html">
|
|
|
|
|
|
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>
|
|
|
|
<li class="chapter " data-level="5.5" data-path="../security/intro.html">
|
|
|
|
<a href="../security/intro.html">
|
|
|
|
|
|
Securing Connections
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.5.1" data-path="../security/userpass.html">
|
|
|
|
<a href="../security/userpass.html">
|
|
|
|
|
|
Authenticating with a User and Password
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.5.2" data-path="../security/token.html">
|
|
|
|
<a href="../security/token.html">
|
|
|
|
|
|
Authenticating with a Token
|
|
|
|
</a>
|
|
|
|
|
|
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|
</li>
|
|
|
|
<li class="chapter " data-level="5.5.3" data-path="../security/nkey.html">
|
|
|
|
<a href="../security/nkey.html">
|
|
|
|
|
|
Authenticating with an NKey
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.5.4" data-path="../security/creds.html">
|
|
|
|
<a href="../security/creds.html">
|
|
|
|
|
|
Authenticating with a Credentials File
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.5.5" data-path="../security/tls.html">
|
|
|
|
<a href="../security/tls.html">
|
|
|
|
|
|
Encrypting Connections with TLS
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6" data-path="../receiving/intro.html">
|
|
|
|
<a href="../receiving/intro.html">
|
|
|
|
|
|
Receiving Messages
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.6.1" data-path="../receiving/sync.html">
|
|
|
|
<a href="../receiving/sync.html">
|
|
|
|
|
|
Synchronous Subscriptions
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.2" data-path="../receiving/async.html">
|
|
|
|
<a href="../receiving/async.html">
|
|
|
|
|
|
Asynchronous Subscriptions
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.3" data-path="../receiving/unsubscribing.html">
|
|
|
|
<a href="../receiving/unsubscribing.html">
|
|
|
|
|
|
Unsubscribing
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.4" data-path="../receiving/unsub_after.html">
|
|
|
|
<a href="../receiving/unsub_after.html">
|
|
|
|
|
|
Unsubscribing After N Messages
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.5" data-path="../receiving/reply.html">
|
|
|
|
<a href="../receiving/reply.html">
|
|
|
|
|
|
Replying to a Message
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.6" data-path="../receiving/wildcards.html">
|
|
|
|
<a href="../receiving/wildcards.html">
|
|
|
|
|
|
Wildcard Subscriptions
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.7" data-path="../receiving/queues.html">
|
|
|
|
<a href="../receiving/queues.html">
|
|
|
|
|
|
Queue Subscriptions
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.8" data-path="../receiving/drain.html">
|
|
|
|
<a href="../receiving/drain.html">
|
|
|
|
|
|
Draining Messages Before Disconnect
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.6.9" data-path="../receiving/structure.html">
|
|
|
|
<a href="../receiving/structure.html">
|
|
|
|
|
|
Structured Data
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
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</ul>
|
|
|
|
</li>
|
|
|
|
<li class="chapter " data-level="5.7" data-path="../sending/intro.html">
|
|
|
|
<a href="../sending/intro.html">
|
|
|
|
|
|
Sending Messages
|
|
|
|
</a>
|
|
|
|
|
|
|
|
<ul class="articles">
|
|
|
|
|
|
<li class="chapter " data-level="5.7.1" data-path="../sending/replyto.html">
|
|
|
|
<a href="../sending/replyto.html">
|
|
|
|
|
|
Including a Reply Subject
|
|
|
|
</a>
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="5.7.2" data-path="../sending/request_reply.html">
|
|
|
|
<a href="../sending/request_reply.html">
|
|
|
|
|
|
Request-Reply Semantics
|
|
|
|
</a>
|
|
|
|
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="5.7.3" data-path="../sending/caches.html">
|
|
|
|
<a href="../sending/caches.html">
|
|
|
|
|
|
Caches, Flush and Ping
|
|
|
|
</a>
|
|
|
|
|
|
|
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</li>
|
|
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|
<li class="chapter " data-level="5.7.4" 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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|
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</ul>
|
|
|
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</li>
|
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|
|
<li class="chapter " data-level="5.8" data-path="../events/intro.html">
|
|
|
|
<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="5.8.1" 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="5.8.2" 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="5.9" 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="5.9.1" data-path="../tutorials/pubsub.html">
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<a href="../tutorials/pubsub.html">
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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="5.9.2" data-path="../tutorials/reqreply.html">
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<a href="../tutorials/reqreply.html">
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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="5.9.3" data-path="../tutorials/queues.html">
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<a href="../tutorials/queues.html">
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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="5.9.4" data-path="../tutorials/custom_dialer.html">
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<a href="../tutorials/custom_dialer.html">
|
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Advanced Connect and Custom Dialer in Go
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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="6.1" data-path="../streaming/">
|
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<a href="../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="6.2" data-path="../streaming/connecting.html">
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<a href="../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="6.3" data-path="../streaming/publishing.html">
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<a href="../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="6.4" data-path="../streaming/receiving.html">
|
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|
<a href="../streaming/receiving.html">
|
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|
|
Receiving Messages from a Channel
|
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</a>
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</li>
|
|
|
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<li class="chapter " data-level="6.5" data-path="../streaming/durables.html">
|
|
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<a href="../streaming/durables.html">
|
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|
|
Durable Subscriptions
|
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</a>
|
|
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</li>
|
|
|
|
<li class="chapter " data-level="6.6" data-path="../streaming/queues.html">
|
|
|
|
<a href="../streaming/queues.html">
|
|
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|
|
Queue Subscriptions
|
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|
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</a>
|
|
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|
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</li>
|
|
|
|
<li class="chapter " data-level="6.7" data-path="../streaming/acks.html">
|
|
|
|
<a href="../streaming/acks.html">
|
|
|
|
|
|
Acknowledgements
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
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|
|
<li class="header">NATS Protocol</li>
|
|
|
|
|
|
|
|
<li class="chapter " data-level="7.1" data-path="../../nats_protocol/nats-protocol-demo.html">
|
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|
|
<a href="../../nats_protocol/nats-protocol-demo.html">
|
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|
|
Protocol Demo
|
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|
|
</a>
|
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</li>
|
|
|
|
<li class="chapter " data-level="7.2" data-path="../../nats_protocol/nats-protocol.html">
|
|
|
|
<a href="../../nats_protocol/nats-protocol.html">
|
|
|
|
|
|
Client Protocol
|
|
|
|
</a>
|
|
|
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|
|
<ul class="articles">
|
|
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|
|
|
<li class="chapter " data-level="7.2.1" data-path="../../nats_protocol/nats-client-dev.html">
|
|
|
|
<a href="../../nats_protocol/nats-client-dev.html">
|
|
|
|
|
|
Developing a Client
|
|
|
|
</a>
|
|
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|
|
</li>
|
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</ul>
|
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</li>
|
|
|
|
<li class="chapter " data-level="7.3" data-path="../../nats_protocol/nats-server-protocol.html">
|
|
|
|
<a href="../../nats_protocol/nats-server-protocol.html">
|
|
|
|
|
|
NATS Cluster Protocol
|
|
|
|
</a>
|
|
|
|
|
|
|
|
</li>
|
|
|
|
|
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<li class="divider"></li>
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<li>
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Published with GitBook
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<div class="book-header" role="navigation">
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<!-- Title -->
|
|
<h1>
|
|
<i class="fa fa-circle-o-notch fa-spin"></i>
|
|
<a href="../.." >Queue Groups</a>
|
|
</h1>
|
|
</div>
|
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<div class="page-wrapper" tabindex="-1" role="main">
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<section class="normal markdown-section">
|
|
|
|
<h1 id="queue-subscribers--sharing-work">Queue Subscribers & Sharing Work</h1>
|
|
<p>NATS provides a load balancing feature called queue subscriptions. Using queue subscribers will load balance message delivery across a group of subscribers which can be used to provide application fault tolerance and scale workload processing.</p>
|
|
<p>To create a queue subscription, subscribers register a queue name. All subscribers with the same queue name form the queue group. As messages on the registered subject are published, one member of the group is chosen randomly to receive the message. Although queue groups have multiple subscribers, each message is consumed by only one.</p>
|
|
<p>One of the great features of NATS is that queue groups are defined by the subscribers, not on the server. Applications can create new queue groups without any server change.</p>
|
|
<p>Queue subscribers are ideal for auto scaling as you can add or remove them anytime, without any configuration changes or restarting the server or clients.</p>
|
|
<div class="graphviz"><code data-viz="dot">
|
|
digraph nats_queues {
|
|
rankdir=LR
|
|
publisher [shape=box, style="rounded", label="Publisher"];
|
|
subject [shape=circle, label="Queue"];
|
|
sub1 [shape=box, style="rounded", label="Subscriber"];
|
|
sub2 [shape=box, style="rounded", label="Subscriber"];
|
|
sub3 [shape=box, style="rounded", label="Subscriber"];
|
|
|
|
publisher -> subject [label="msgs 1,2,3"];
|
|
subject -> sub1 [label="msg 2"];
|
|
subject -> sub2 [label="msg 1"];
|
|
subject -> sub3 [label="msg 3"];
|
|
}
|
|
</code></div>
|
|
|
|
<p>Try NATS queue subscriptions on your own, using a live server by walking through the <a href="../tutorials/queues.html">queueing tutorial</a>.</p>
|
|
|
|
|
|
</section>
|
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</div>
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<div class="search-results">
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<div class="has-results">
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<h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
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<ul class="search-results-list"></ul>
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<div class="no-results">
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<h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1>
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</div>
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</div>
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</div>
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<a href="reqreply.html" class="navigation navigation-prev " aria-label="Previous page: Request-Reply">
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<a href="acks.html" class="navigation navigation-next " aria-label="Next page: Acknowledgements">
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gitbook.page.hasChanged({"page":{"title":"Queue Groups","level":"5.2.4","depth":2,"next":{"title":"Acknowledgements","level":"5.2.5","depth":2,"path":"developer/concepts/acks.md","ref":"developer/concepts/acks.md","articles":[]},"previous":{"title":"Request-Reply","level":"5.2.3","depth":2,"path":"developer/concepts/reqreply.md","ref":"developer/concepts/reqreply.md","articles":[]},"dir":"ltr"},"config":{"plugins":["prism","-highlight","include-html","toggle-chapters"],"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"pluginsConfig":{"prism":{"lang":{"ascii":"markup","text":"markup"}},"include-html":{},"toggle-chapters":{},"search":{},"lunr":{"maxIndexSize":1000000,"ignoreSpecialCharacters":false},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"fontsettings":{"theme":"white","family":"sans","size":2},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false}},"theme":"default","author":"The NATS Maintainers","pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"variables":{},"title":"NATS","gitbook":"*","description":"Administrative, developer and conceptual documentation for the NATS messaging system."},"file":{"path":"developer/concepts/queue.md","mtime":"2019-05-16T22:50:38.140Z","type":"markdown"},"gitbook":{"version":"3.2.3","time":"2019-05-20T21:33:32.997Z"},"basePath":"../..","book":{"language":""}});
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function updateLanguageParameter(value) {
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}
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function getLanguageParameter() {
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var match = RegExp('[?&]lang=([^&]*)').exec(window.location.search);
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return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
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document.querySelectorAll('.api-lang').forEach(elem => {
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elem.addEventListener("click", function () {
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var curLang = sessionStorage.getItem('nats-api-language');
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var lang = this.getAttribute('data-language');
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// Stop the infinite loop
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if (curLang == lang) {
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return;
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sessionStorage.setItem('nats-api-language', lang); // So we only do this 1x
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updateLanguageParameter(lang)
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document.querySelectorAll('.api-lang[data-language=' + lang + ']').forEach(elem => {
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if (sessionStorage) {
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var curLang = sessionStorage.getItem('nats-api-language');
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var queryLang = getLanguageParameter();
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var lang = curLang;
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if (queryLang) { // query takes precedent
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lang = queryLang
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}
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if (lang) {
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document.querySelectorAll('.api-lang[data-language=' + lang + ']').forEach(elem => {
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elem.click();
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border: 0;
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padding-top: 15px;
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padding-right: 15px;
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|
|
.tab:checked:nth-of-type(2)~.tab__content:nth-of-type(2) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(3)~.tab__content:nth-of-type(3) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(4)~.tab__content:nth-of-type(4) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(5)~.tab__content:nth-of-type(5) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(6)~.tab__content:nth-of-type(6) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(7)~.tab__content:nth-of-type(7) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:checked:nth-of-type(8)~.tab__content:nth-of-type(8) {
|
|
opacity: 1;
|
|
transition: 0.5s opacity ease-in, 0.8s -webkit-transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease;
|
|
transition: 0.5s opacity ease-in, 0.8s transform ease, 0.8s -webkit-transform ease;
|
|
position: relative;
|
|
top: 0;
|
|
z-index: 100;
|
|
-webkit-transform: translateY(0px);
|
|
transform: translateY(0px);
|
|
text-shadow: 0 0 0;
|
|
}
|
|
|
|
.tab:first-of-type:not(:last-of-type)+label {
|
|
border-top-right-radius: 0;
|
|
border-bottom-right-radius: 0;
|
|
}
|
|
|
|
.tab:not(:first-of-type):not(:last-of-type)+label {
|
|
border-radius: 0;
|
|
}
|
|
|
|
.tab:last-of-type:not(:first-of-type)+label {
|
|
border-top-left-radius: 0;
|
|
border-bottom-left-radius: 0;
|
|
}
|
|
|
|
.tab:checked+label {
|
|
background-color: #fff;
|
|
box-shadow: 0 -1px 0 #fff inset;
|
|
cursor: default;
|
|
font-weight: bold;
|
|
border: 1px solid #ddd;
|
|
border-bottom-color: transparent;
|
|
}
|
|
|
|
.tab:checked+label:hover {
|
|
box-shadow: 0 -1px 0 #fff inset;
|
|
background-color: #fff;
|
|
}
|
|
|
|
.tab+label {
|
|
box-shadow: 0 -1px 0 #eee inset;
|
|
border-radius: 6px 6px 0 0;
|
|
cursor: pointer;
|
|
display: block;
|
|
text-decoration: none;
|
|
color: #27aae1;
|
|
flex-grow: 3;
|
|
text-align: center;
|
|
-webkit-user-select: none;
|
|
-moz-user-select: none;
|
|
-ms-user-select: none;
|
|
user-select: none;
|
|
text-align: center;
|
|
transition: 0.3s background-color ease, 0.3s box-shadow ease;
|
|
height: 50px;
|
|
box-sizing: border-box;
|
|
padding: 15px;
|
|
}
|
|
|
|
.tab+label:hover {
|
|
background-color: #f9f9f9;
|
|
box-shadow: 0 1px 0 #f4f4f4 inset;
|
|
}
|
|
|
|
.tab__content {
|
|
padding: 2px 2px;
|
|
background-color: transparent;
|
|
position: absolute;
|
|
width: 100%;
|
|
z-index: -1;
|
|
opacity: 0;
|
|
left: 0;
|
|
-webkit-transform: translateY(-3px);
|
|
transform: translateY(-3px);
|
|
border-radius: 6px;
|
|
}
|
|
|
|
.tab__content pre {
|
|
margin-bottom: 0px !important;
|
|
}
|
|
|
|
.toolbar-icons {
|
|
display: inline-block;
|
|
position: relative;
|
|
padding-left: 4px;
|
|
}
|
|
|
|
a.toolbar-icons {
|
|
text-decoration: none;
|
|
}
|
|
|
|
.toolbar-icons .mdi {
|
|
color: #4183c4;
|
|
}
|
|
|
|
.copy-msg {
|
|
color: #4183c4;
|
|
}
|
|
|
|
.pull-right {
|
|
float: right !important;
|
|
}
|
|
|
|
.pull-left {
|
|
float: left !important;
|
|
}
|
|
</style>
|
|
|
|
|
|
<script src="../../gitbook/gitbook.js"></script>
|
|
<script src="../../gitbook/theme.js"></script>
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-toggle-chapters/toggle.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-search/search-engine.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-search/search.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-lunr/lunr.min.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-lunr/search-lunr.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-sharing/buttons.js"></script>
|
|
|
|
|
|
|
|
<script src="../../gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|
|
|