Instead, mod_jkcommunicates with the various worker processes created by Tomcat through a network connection. The mod_jk module is written in C, so it’s incapable of interpreting Java classes directly. Well, when Tomcat executes as well as creating an HTTP listener service, it also creates a number of “worker” processes responsible for executing JSPs/servlets. Tomcat is written in Java, while Apache and its modules are written in C, so how do the two work together? To integrate the Tomcat server processes with the Apache HTTP server we need the mod_jkmodule, which implements the interface between Tomcat and Apache, combined with some small steps to configure Apache and Tomcat to our needs. We’ll look at the specific steps later in this article. Tomcat has its own built-in HTTP service that handles and services requests from clients. Installing Tomcat itself is relatively easy - download the corresponding installer from the Tomcat pages at Apache, expand the files or run the installer, and then use the corresponding script to start up the Tomcat service. Learn how to install and configure Tomcat to work with your Apache server. SWatch Reader Favorite! Looking to add Java functionality to your Apache Web server? The tool of choice from the Apache Foundation is the Tomcat Java server. Tomcat itself is part of the Jakarta Project, which is a suite of Java development tools developed through the Apache foundation.

Tomcat 3 covers the Servlet 2.2 and JSP 1.1 revisions, while Tomcat 4 covers Servlet 2.3 and JSP 1.2. Tomcat is the Apache Foundation’s reference implementation of the JavaServer Pages and Servlet technologies. If you write JavaServer Pages or use Servlets to provide the functionality of your Web site, you’re probably already aware of Tomcat.

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