Apache Traffic Server

What Apache Traffic Server is

Apache Traffic Server is an open-source caching proxy server for HTTP/1.1 and HTTP/2. It reuses frequently requested pages, images, and web service calls to improve response time and reduce server load and bandwidth needs. It can add keep-alive behavior, filter or anonymize requests, and provide proxy-layer load balancing. Documented deployment patterns include web proxy cache, reverse proxy, and cache hierarchy. As a layer 7 HTTP load balancer, it can select next-hop servers using request attributes, weighted round robin, or URL consistent hashing. Plug-in APIs let users add behavior such as changing HTTP headers, handling ESI requests, or implementing a cache algorithm. Security options include client access controls and authentication, SSL termination, and SSL-based access control. The project states that it fully supports HTTP/1.1 and HTTP/2, with work continuing on emerging web standards and protocols. Traffic Server is designed for enterprises, internet service providers, backbone providers, and large intranets. The project lists 10.2.0 as its latest stable release and 9.2.15 as its long-term support release with security fixes and critical updates.