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Code Editor : connectors.html

<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat 7 (7.0.107) - Connectors How To</title><meta name="author" content="Remy Maucherat"><style type="text/css" media="print">
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</style></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><tr><td><a href="https://tomcat.apache.org/"><img src="./images/tomcat.gif" align="right" alt="
      The Apache Tomcat Servlet/JSP Container
    " border="0"></a></td><td><h1><font face="arial,helvetica,sanserif">Apache Tomcat 7</font></h1><font face="arial,helvetica,sanserif">Version 7.0.107, Nov 18 2020</font></td><td><a href="http://www.apache.org/"><img src="./images/asf-logo.svg" align="right" alt="Apache Logo" border="0" style="width: 266px;height: 83px;"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><tr><td colspan="2"><hr noshade size="1"></td></tr><tr><td width="20%" valign="top" nowrap class="noPrint"><p><strong>Links</strong></p><ul><li><a href="index.html">Docs Home</a></li><li><a href="https://wiki.apache.org/tomcat/FAQ">FAQ</a></li><li><a href="#comments_section">User Comments</a></li></ul><p><strong>User Guide</strong></p><ul><li><a href="introduction.html">1) Introduction</a></li><li><a href="setup.html">2) Setup</a></li><li><a href="appdev/index.html">3) First webapp</a></li><li><a href="deployer-howto.html">4) Deployer</a></li><li><a href="manager-howto.html">5) Manager</a></li><li><a href="host-manager-howto.html">6) Host Manager</a></li><li><a href="realm-howto.html">7) Realms and AAA</a></li><li><a href="security-manager-howto.html">8) Security Manager</a></li><li><a href="jndi-resources-howto.html">9) JNDI Resources</a></li><li><a href="jndi-datasource-examples-howto.html">10) JDBC DataSources</a></li><li><a href="class-loader-howto.html">11) Classloading</a></li><li><a href="jasper-howto.html">12) JSPs</a></li><li><a href="ssl-howto.html">13) SSL/TLS</a></li><li><a href="ssi-howto.html">14) SSI</a></li><li><a href="cgi-howto.html">15) CGI</a></li><li><a href="proxy-howto.html">16) Proxy Support</a></li><li><a href="mbeans-descriptors-howto.html">17) MBeans Descriptors</a></li><li><a href="default-servlet.html">18) Default Servlet</a></li><li><a href="cluster-howto.html">19) Clustering</a></li><li><a href="balancer-howto.html">20) Load Balancer</a></li><li><a href="connectors.html">21) Connectors</a></li><li><a href="monitoring.html">22) Monitoring and Management</a></li><li><a href="logging.html">23) Logging</a></li><li><a href="apr.html">24) APR/Native</a></li><li><a href="virtual-hosting-howto.html">25) Virtual Hosting</a></li><li><a href="aio.html">26) Advanced IO</a></li><li><a href="extras.html">27) Additional Components</a></li><li><a href="maven-jars.html">28) Mavenized</a></li><li><a href="security-howto.html">29) Security Considerations</a></li><li><a href="windows-service-howto.html">30) Windows Service</a></li><li><a href="windows-auth-howto.html">31) Windows Authentication</a></li><li><a href="jdbc-pool.html">32) Tomcat's JDBC Pool</a></li><li><a href="web-socket-howto.html">33) WebSocket</a></li></ul><p><strong>Reference</strong></p><ul><li><a href="RELEASE-NOTES.txt">Release Notes</a></li><li><a href="config/index.html">Configuration</a></li><li><a href="api/index.html">Tomcat Javadocs</a></li><li><a href="servletapi/index.html">Servlet Javadocs</a></li><li><a href="jspapi/index.html">JSP 2.2 Javadocs</a></li><li><a href="elapi/index.html">EL 2.2 Javadocs</a></li><li><a href="websocketapi/index.html">WebSocket 1.1 Javadocs</a></li><li><a href="annotationapi/index.html">Common Annotations 1.1 Javadocs</a></li><li><a href="https://tomcat.apache.org/connectors-doc/">JK 1.2 Documentation</a></li></ul><p><strong>Apache Tomcat Development</strong></p><ul><li><a href="building.html">Building</a></li><li><a href="changelog.html">Changelog</a></li><li><a href="https://wiki.apache.org/tomcat/TomcatVersions">Status</a></li><li><a href="developers.html">Developers</a></li><li><a href="architecture/index.html">Architecture</a></li><li><a href="tribes/introduction.html">Tribes</a></li></ul></td><td width="80%" valign="top" align="left" id="mainBody"><h1>Connectors How To</h1><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Table of Contents"></a><a name="Table_of_Contents"><strong>Table of Contents</strong></a></font></td></tr><tr><td><blockquote>
<ul><li><a href="#Introduction">Introduction</a></li><li><a href="#HTTP">HTTP</a></li><li><a href="#AJP">AJP</a></li></ul>
</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>

<p>Choosing a connector to use with Tomcat can be difficult. This page will
list the connectors which are supported with this Tomcat release, and will
hopefully help you make the right choice according to your needs.</p>

</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="HTTP"><strong>HTTP</strong></a></font></td></tr><tr><td><blockquote>

<p>The HTTP connector is setup by default with Tomcat, and is ready to use. This
connector features the lowest latency and best overall performance.</p>

<p>For clustering, an HTTP load balancer <b>with support for web sessions stickiness</b>
must be installed to direct the traffic to the Tomcat servers. Tomcat supports mod_proxy
(on Apache HTTP Server 2.x, and included by default in Apache HTTP Server 2.2) as the load balancer.
It should be noted that the performance of HTTP proxying is usually lower than the
performance of AJP, so AJP clustering is often preferable.</p>

</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="AJP"><strong>AJP</strong></a></font></td></tr><tr><td><blockquote>

<p>When using a single server, the performance when using a native webserver in
front of the Tomcat instance is most of the time significantly worse than a
standalone Tomcat with its default HTTP connector, even if a large part of the web
application is made of static files. If integration with the native webserver is
needed for any reason, an AJP connector will provide faster performance than
proxied HTTP. AJP clustering is the most efficient from the Tomcat perspective.
It is otherwise functionally equivalent to HTTP clustering.</p>

<p>The native connectors supported with this Tomcat release are:</p>
<ul>
<li>JK 1.2.x with any of the supported servers</li>
<li>mod_proxy on Apache HTTP Server 2.x (included by default in Apache HTTP Server 2.2),
with AJP enabled</li>
</ul>

<p><b>Other native connectors supporting AJP may work, but are no longer supported.</b></p>

</blockquote></td></tr></table></td></tr><tr><td colspan="2"><hr noshade size="1"></td></tr><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
        Copyright &copy; 1999-2020, Apache Software Foundation
        </em></font></div></td></tr></table></body></html>

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