Apache HTTPD mod_proxy_ajp
Apache HTTPD mod_proxy_ajp is an Apache HTTPD module that provides support for proxying requests via the Apache JServ Protocol (AJP) in the Apache HTTP Server (HTTPD). AJP is a binary protocol designed for communication between a web server, such as Apache HTTPD, and a backend application server, such as Apache Tomcat. Mod_proxy_ajp enables Apache HTTPD to act as a reverse proxy, forwarding incoming requests from clients to backend Tomcat servers using the AJP protocol. This module offers features such as load balancing, session persistence, and dynamic reconfiguration, allowing administrators to build scalable and resilient architectures for deploying Java-based web applications. Mod_proxy_ajp works seamlessly with other proxy modules like mod_proxy_balancer and mod_proxy_http, enabling administrators to create sophisticated proxy setups that leverage the strengths of different backend servers and protocols. s://httpd.apache.org/docs/2.4/mod/mod_proxy_ajp.html