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+
+ <h1 id="queue-attributes">Queue Attributes</h1>
+<p>Queue attributes can be set in one of two ways. Either by configuring
+them using the configuration file or by using the core API. This chapter
+will explain how to configure each attribute and what effect the
+attribute has.</p>
+<h2 id="predefined-queues">Predefined Queues</h2>
+<p>Queues can be predefined via configuration at a core level or at a JMS
+level. Firstly let's look at a JMS level.</p>
+<p>The following shows a queue predefined in the jms element of the <code>broker.xml</code>
+configuration file.</p>
+<pre><code><queue name="selectorQueue">
+ <selector string="color='red'"/>
+ <durable>true</durable>
+</queue>
+</code></pre><p>This name attribute of queue defines the name of the queue. When we do
+this at a jms level we follow a naming convention so the actual name of
+the core queue will be <code>jms.queue.selectorQueue</code>.</p>
+<p>The selector element defines what JMS message selector the predefined
+queue will have. Only messages that match the selector will be added to
+the queue. This is an optional element with a default of null when
+omitted.</p>
+<p>The durable element specifies whether the queue will be persisted. This
+again is optional and defaults to true if omitted.</p>
+<p>Secondly a queue can be predefined at a core level in the
+<code>broker.xml</code> file. The following is an example.</p>
+<pre><code><queues>
+ <queue name="jms.queue.selectorQueue">
+ <address>jms.queue.selectorQueue</address>
+ <filter string="color='red'"/>
+ <durable>true</durable>
+ </queue>
+</queues>
+</code></pre><p>This is very similar to the JMS configuration, with 3 real differences
+which are.</p>
+<ol>
+<li><p>The name attribute of queue is the actual name used for the queue
+with no naming convention as in JMS.</p>
+</li>
+<li><p>The address element defines what address is used for routing
+messages.</p>
+</li>
+<li><p>The filter uses the <em>Core filter syntax</em> (described in <a href="filter-expressions.html">filter Expressions</a>), <em>not</em> the
+JMS selector syntax.</p>
+</li>
+</ol>
+<h2 id="using-the-api">Using the API</h2>
+<p>Queues can also be created using the core API or the management API.</p>
+<p>For the core API, queues can be created via the
+<code>org.apache.activemq.artemis.api.core.client.ClientSession</code> interface. There are
+multiple <code>createQueue</code> methods that support setting all of the
+previously mentioned attributes. There is one extra attribute that can
+be set via this API which is <code>temporary</code>. setting this to true means
+that the queue will be deleted once the session is disconnected.</p>
+<p>Take a look at <a href="management.html">Management</a> for a description of the management API for creating
+queues.</p>
+<h2 id="configuring-queues-via-address-settings">Configuring Queues Via Address Settings</h2>
+<p>There are some attributes that are defined against an address wildcard
+rather than a specific queue. Here an example of an <code>address-setting</code>
+entry that would be found in the <code>broker.xml</code> file.</p>
+<pre><code><address-settings>
+ <address-setting match="jms.queue.exampleQueue">
+ <dead-letter-address>jms.queue.deadLetterQueue</dead-letter-address>
+ <max-delivery-attempts>3</max-delivery-attempts>
+ <redelivery-delay>5000</redelivery-delay>
+ <expiry-address>jms.queue.expiryQueue</expiry-address>
+ <last-value-queue>true</last-value-queue>
+ <max-size-bytes>100000</max-size-bytes>
+ <page-size-bytes>20000</page-size-bytes>
+ <redistribution-delay>0</redistribution-delay>
+ <send-to-dla-on-no-route>true</send-to-dla-on-no-route>
+ <address-full-policy>PAGE</address-full-policy>
+ <slow-consumer-threshold>-1</slow-consumer-threshold>
+ <slow-consumer-policy>NOTIFY</slow-consumer-policy>
+ <slow-consumer-check-period>5</slow-consumer-check-period>
+ <auto-create-jms-queues>true</auto-create-jms-queues>
+ <auto-delete-jms-queues>true</auto-delete-jms-queues>
+ <auto-create-jms-topics>true</auto-create-jms-topics>
+ <auto-delete-jms-topics>true</auto-delete-jms-topics>
+ </address-setting>
+</address-settings>
+</code></pre><p>The idea with address settings, is you can provide a block of settings
+which will be applied against any addresses that match the string in the
+<code>match</code> attribute. In the above example the settings would only be
+applied to any addresses which exactly match the address
+<code>jms.queue.exampleQueue</code>, but you can also use wildcards to apply sets
+of configuration against many addresses. The wildcard syntax used is
+described <a href="#wildcard-syntax">here</a>.</p>
+<p>For example, if you used the <code>match</code> string <code>jms.queue.#</code> the settings
+would be applied to all addresses which start with <code>jms.queue.</code> which
+would be all JMS queues.</p>
+<p>The meaning of the specific settings are explained fully throughout the
+user manual, however here is a brief description with a link to the
+appropriate chapter if available.</p>
+<p><code>max-delivery-attempts</code> defines how many time a cancelled message can be
+redelivered before sending to the <code>dead-letter-address</code>. A full
+explanation can be found <a href="#undelivered-messages.configuring">here</a>.</p>
+<p><code>redelivery-delay</code> defines how long to wait before attempting redelivery
+of a cancelled message. see <a href="#undelivered-messages.delay">here</a>.</p>
+<p><code>expiry-address</code> defines where to send a message that has expired. see
+<a href="#message-expiry.configuring">here</a>.</p>
+<p><code>expiry-delay</code> defines the expiration time that will be used for
+messages which are using the default expiration time (i.e. 0). For
+example, if <code>expiry-delay</code> is set to "10" and a message which is using
+the default expiration time (i.e. 0) arrives then its expiration time of
+"0" will be changed to "10." However, if a message which is using an
+expiration time of "20" arrives then its expiration time will remain
+unchanged. Setting <code>expiry-delay</code> to "-1" will disable this feature. The
+default is "-1".</p>
+<p><code>last-value-queue</code> defines whether a queue only uses last values or not.
+see <a href="#last-value-queues">here</a>.</p>
+<p><code>max-size-bytes</code> and <code>page-size-bytes</code> are used to set paging on an
+address. This is explained <a href="#paging">here</a>.</p>
+<p><code>redistribution-delay</code> defines how long to wait when the last consumer
+is closed on a queue before redistributing any messages. see
+<a href="#clusters">here</a>.</p>
+<p><code>send-to-dla-on-no-route</code>. If a message is sent to an address, but the
+server does not route it to any queues, for example, there might be no
+queues bound to that address, or none of the queues have filters that
+match, then normally that message would be discarded. However if this
+parameter is set to true for that address, if the message is not routed
+to any queues it will instead be sent to the dead letter address (DLA)
+for that address, if it exists.</p>
+<p><code>address-full-policy</code>. This attribute can have one of the following
+values: PAGE, DROP, FAIL or BLOCK and determines what happens when an
+address where <code>max-size-bytes</code> is specified becomes full. The default
+value is PAGE. If the value is PAGE then further messages will be paged
+to disk. If the value is DROP then further messages will be silently
+dropped. If the value is FAIL then further messages will be dropped and
+an exception will be thrown on the client-side. If the value is BLOCK
+then client message producers will block when they try and send further
+messages. See the following chapters for more info <a href="flow-control.html">Flow Control</a>, <a href="paging.html">Paging</a>.</p>
+<p><code>slow-consumer-threshold</code>. The minimum rate of message consumption
+allowed before a consumer is considered "slow." Measured in
+messages-per-second. Default is -1 (i.e. disabled); any other valid
+value must be greater than 0.</p>
+<p><code>slow-consumer-policy</code>. What should happen when a slow consumer is
+detected. <code>KILL</code> will kill the consumer's connection (which will
+obviously impact any other client threads using that same connection).
+<code>NOTIFY</code> will send a CONSUMER_SLOW management notification which an
+application could receive and take action with. See <a href="slow-consumers.html">slow consumers</a> for more details
+on this notification.</p>
+<p><code>slow-consumer-check-period</code>. How often to check for slow consumers on a
+particular queue. Measured in seconds. Default is 5. See <a href="slow-consumers.html">slow consumers</a>
+for more information about slow consumer detection.</p>
+<p><code>auto-create-jms-queues</code>. Whether or not the broker should automatically
+create a JMS queue when a JMS message is sent to a queue whose name fits
+the address <code>match</code> (remember, a JMS queue is just a core queue which has
+the same address and queue name) or a JMS consumer tries to connect to a
+queue whose name fits the address <code>match</code>. Queues which are auto-created
+are durable, non-temporary, and non-transient. Default is <code>true</code>.</p>
+<p><code>auto-delete-jms-queues</code>. Whether or not the broker should automatically
+delete auto-created JMS queues when they have both 0 consumers and 0 messages.
+Default is <code>true</code>.</p>
+<p><code>auto-create-jms-topics</code>. Whether or not the broker should automatically
+create a JMS topic when a JMS message is sent to a topic whose name fits
+the address <code>match</code> (remember, a JMS topic is just a core address which has
+one or more core queues mapped to it) or a JMS consumer tries to subscribe
+to a topic whose name fits the address <code>match</code>. Default is <code>true</code>.</p>
+<p><code>auto-delete-jms-topics</code>. Whether or not the broker should automatically
+delete auto-created JMS topics once the last subscription on the topic has
+been closed. Default is <code>true</code>.</p>
+
+
+ </section>
+
+ </div>
+ <div class="search-results">
+ <div class="has-results">
+
+ <h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
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+ gitbook.push(function() {
+ gitbook.page.hasChanged({"page":{"title":"Queue Attributes","level":"1.28","depth":1,"next":{"title":"Scheduled Messages","level":"1.29","depth":1,"path":"scheduled-messages.md","ref":"scheduled-messages.md","articles":[]},"previous":{"title":"Paging","level":"1.27","depth":1,"path":"paging.md","ref":"paging.md","articles":[]},"dir":"ltr"},"config":{"plugins":[],"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":{"highlight":{},"search":{},"lunr":{"maxIndexSize":1000000},"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
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Added: websites/production/activemq/content/artemis/docs/1.5.4/resource-limits.html
==============================================================================
--- websites/production/activemq/content/artemis/docs/1.5.4/resource-limits.html (added)
+++ websites/production/activemq/content/artemis/docs/1.5.4/resource-limits.html Sun Mar 12 16:08:18 2017
@@ -0,0 +1,1016 @@
+
+<!DOCTYPE HTML>
+<html lang="" >
+ <head>
+ <title>Resource Limits · ActiveMQ Artemis Documentation</title>
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+
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+
+ <a href="messaging-concepts.html">
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+ Messaging Concepts
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+
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+ Using JMS
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+
+ <a href="using-core.html">
+
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+ Using Core
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+
+ <li class="chapter " data-level="1.10" data-path="jms-core-mapping.html">
+
+ <a href="jms-core-mapping.html">
+
+
+ Mapping JMS Concepts to the Core API
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+ <li class="chapter " data-level="1.11" data-path="client-classpath.html">
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+ The Client Classpath
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+ <li class="chapter " data-level="1.13" data-path="wildcard-routing.html">
+
+ <a href="wildcard-routing.html">
+
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+ Routing Messages With Wild Cards
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+ <li class="chapter " data-level="1.14" data-path="wildcard-syntax.html">
+
+ <a href="wildcard-syntax.html">
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+ Understanding the Apache ActiveMQ Artemis Wildcard Syntax
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+ Filter Expressions
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+
+ <a href="persistence.html">
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+ Persistence
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+ <li class="chapter " data-level="1.17" data-path="configuring-transports.html">
+
+ <a href="configuring-transports.html">
+
+
+ Configuring Transports
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+ </a>
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+
+
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+ <li class="chapter " data-level="1.18" data-path="config-reload.html">
+
+ <a href="config-reload.html">
+
+
+ Configuration Reload
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+ </a>
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+
+
+ </li>
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+ <li class="chapter " data-level="1.19" data-path="connection-ttl.html">
+
+ <a href="connection-ttl.html">
+
+
+ Detecting Dead Connections
+
+ </a>
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+
+ </li>
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+ <li class="chapter " data-level="1.20" data-path="slow-consumers.html">
+
+ <a href="slow-consumers.html">
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+ Detecting Slow Consumers
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+
+ <a href="transaction-config.html">
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+ Resource Manager Configuration
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+
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+ <li class="chapter " data-level="1.22" data-path="flow-control.html">
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+ <a href="flow-control.html">
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+
+ Flow Control
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+
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+ <li class="chapter " data-level="1.23" data-path="send-guarantees.html">
+
+ <a href="send-guarantees.html">
+
+
+ Guarantees of sends and commits
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+ <li class="chapter " data-level="1.24" data-path="undelivered-messages.html">
+
+ <a href="undelivered-messages.html">
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+ Message Redelivery and Undelivered Messages
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+ Message Expiry
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+ <li class="chapter " data-level="1.26" data-path="large-messages.html">
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+ Large Messages
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+ Paging
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+
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+ <li class="chapter " data-level="1.28" data-path="queue-attributes.html">
+
+ <a href="queue-attributes.html">
+
+
+ Queue Attributes
+
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+
+
+ </li>
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+ <li class="chapter " data-level="1.29" data-path="scheduled-messages.html">
+
+ <a href="scheduled-messages.html">
+
+
+ Scheduled Messages
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+ <a href="last-value-queues.html">
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+ Last-Value Queues
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+
+ <a href="message-grouping.html">
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+ Message Grouping
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+ Extra Acknowledge Modes
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+ Management
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+ <a href="security.html">
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+ Security
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+
+ </li>
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+ <li class="chapter active" data-level="1.35" data-path="resource-limits.html">
+
+ <a href="resource-limits.html">
+
+
+ Resource Limits
+
+ </a>
+
+
+
+ </li>
+
+ <li class="chapter " data-level="1.36" data-path="jms-bridge.html">
+
+ <a href="jms-bridge.html">
+
+
+ The JMS Bridge
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+
+
+ </li>
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+ <li class="chapter " data-level="1.37" data-path="client-reconnection.html">
+
+ <a href="client-reconnection.html">
+
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+ Client Reconnection and Session Reattachment
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+
+ <a href="diverts.html">
+
+
+ Diverting and Splitting Message Flows
+
+ </a>
+
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+
+ <li class="chapter " data-level="1.39" data-path="core-bridges.html">
+
+ <a href="core-bridges.html">
+
+
+ Core Bridges
+
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+ <li class="chapter " data-level="1.40" data-path="duplicate-detection.html">
+
+ <a href="duplicate-detection.html">
+
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+ Duplicate Message Detection
+
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+
+ <a href="clusters.html">
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+ Clusters
+
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+
+ <a href="ha.html">
+
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+ High Availability and Failover
+
+ </a>
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+ <li class="chapter " data-level="1.43" data-path="graceful-shutdown.html">
+
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+
+
+ Graceful Server Shutdown
+
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+ <li class="chapter " data-level="1.44" data-path="libaio.html">
+
+ <a href="libaio.html">
+
+
+ Libaio Native Libraries
+
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+
+ <a href="thread-pooling.html">
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+ Thread management
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+
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+ Embedding Apache ActiveMQ Artemis
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+ Apache Karaf
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+
+ AeroGear Integration
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+ CDI Integration
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+
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+
+ <a href="intercepting-operations.html">
+
+
+ Intercepting Operations
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+
+
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+
+ Protocols and Interoperability
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+
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+
+ <a href="tools.html">
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+ Tools
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+
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+
+ Maven Plugin
+
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+
+
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+ <a href="." >Resource Limits</a>
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+ <h1 id="resource-limits">Resource Limits</h1>
+<p>Sometimes it's helpful to set particular limits on what certain users can
+do beyond the normal security settings related to authorization and
+authentication. For example, limiting how many connections a user can create
+or how many queues a user can create. This chapter will explain how to
+configure such limits.</p>
+<h2 id="configuring-limits-via-resource-limit-settings">Configuring Limits Via Resource Limit Settings</h2>
+<p>Here is an example of the XML used to set resource limits:</p>
+<pre><code><resource-limit-settings>
+ <resource-limit-setting match="myUser">
+ <max-connections>5</max-connections>
+ <max-queues>3</max-queues>
+ </resource-limit-setting>
+</resource-limit-settings>
+</code></pre><p>Unlike the <code>match</code> from <code>address-setting</code>, this <code>match</code> does not use
+any wild-card syntax. It's a simple 1:1 mapping of the limits to a user.</p>
+<p><code>max-connections</code> defines how many connections the matched user can make
+to the broker. The default is -1 which means there is no limit.</p>
+<p><code>max-queues</code> defines how many queues the matched user can create. The default
+is -1 which means there is no limit.</p>
+
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