| <?xml version="1.0"?> |
| <!DOCTYPE document [ |
| <!ENTITY project SYSTEM "project.xml"> |
| ]> |
| <document url="connectors.html"> |
| |
| &project; |
| |
| <properties> |
| <author email="remm@apache.org">Remy Maucherat</author> |
| <title>Connectors How To</title> |
| </properties> |
| |
| <body> |
| |
| <section name="Introduction"> |
| |
| <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> |
| |
| </section> |
| |
| <section name="HTTP"> |
| |
| <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, a 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> |
| |
| </section> |
| |
| <section name="AJP"> |
| |
| <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: |
| <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> |
| |
| <p><b>Other native connectors supporting AJP may work, but are no longer supported.</b></p> |
| |
| </section> |
| |
| </body> |
| |
| </document> |