| # Apache Tomcat 7 Version 7.0.109, Apr 22 2021 |

Links Docs Home FAQ User Comments User Guide 1) Introduction 2) Setup 3) First webapp 4) Deployer 5) Manager 6) Host Manager 7) Realms and AAA 8) Security Manager 9) JNDI Resources 10) JDBC DataSources 11) Classloading 12) JSPs 13) SSL/TLS 14) SSI 15) CGI 16) Proxy Support 17) MBeans Descriptors 18) Default Servlet 19) Clustering 20) Load Balancer 21) Connectors 22) Monitoring and Management 23) Logging 24) APR/Native 25) Virtual Hosting 26) Advanced IO 27) Additional Components 28) Mavenized 29) Security Considerations 30) Windows Service 31) Windows Authentication 32) Tomcat's JDBC Pool 33) WebSocket Reference Release Notes Configuration Tomcat Javadocs Servlet Javadocs JSP 2.2 Javadocs EL 2.2 Javadocs WebSocket 1.1 Javadocs Common Annotations 1.1 Javadocs JK 1.2 Documentation Apache Tomcat Development Building Changelog Status Developers Architecture Tribes | # Connectors How To
Table of Contents
Introduction HTTP AJP
Introduction
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.
HTTP
The HTTP connector is setup by default with Tomcat, and is ready to use. This connector features the lowest latency and best overall performance. For clustering, an HTTP load balancer with support for web sessions stickiness 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.
AJP
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. The native connectors supported with this Tomcat release are: JK 1.2.x with any of the supported servers mod_proxy on Apache HTTP Server 2.x (included by default in Apache HTTP Server 2.2), with AJP enabled Other native connectors supporting AJP may work, but are no longer supported.
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