Running in production · Independent · 23 Oct 2026

apache/trafficserver

Apache Traffic Server™ is a fast, scalable and extensible HTTP/1.1 and HTTP/2 compliant caching proxy server.

← Running in production
Apache Traffic Server. Fast, scalable HTTP caching proxy server.

In simple English

This program acts as a middleman between website visitors and your web servers. It sits in front of your applications and saves copies of web pages in its memory or disk. When a new person visits, it serves the saved copy instantly without waking up your main application. It requires a dedicated server, advanced Linux knowledge and ongoing maintenance to keep it running smoothly. It costs nothing in licence fees because it is free open-source software.

What it is

Apache Traffic Server is a high-performance reverse proxy and caching server written in C++. It handles massive web traffic loads by caching content and routing requests efficiently across multiple backend nodes.

What it is good for

Solo builders and infrastructure engineers who run high-traffic web applications and need to reduce server load by caching static or dynamic responses close to the user.

Stars2.0k
LicenceApache-2.0
LatestNo tagged releasechecked 23 Oct 2026
Last code change2026-10-23
Written inC++
Setup effort
4 / 5
Payoff
4 / 5
Good
  • Handles millions of concurrent requests with low memory and CPU overhead.
  • Supports modern protocols including HTTP/2, HTTP/3, and QUIC.
  • Extensible through a robust plugin API written in C and C++ or Lua.
Watch for
  • Requires compiling from source code using CMake and a C++17 compiler, which is difficult for non-programmers.
  • Demands careful tuning of memory, file descriptors, and kernel settings to perform well.
  • Complex configuration files can take significant time to master.
Replaces

Nginx caching proxy or Varnish cache

Works well with

HAProxy for load balancing and backend routing

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Install
git clone https://github.com/apache/trafficserver.git
cd trafficserver
cmake --preset default
cmake --build build-default
sudo cmake --install build-default

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