# apache/trafficserver

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

Repository: https://github.com/apache/trafficserver
Canonical: https://ross.abutalabs.com/products/trafficserver
Homepage: https://trafficserver.apache.org/
Language: C++
License: Apache-2.0
License Family: permissive
Topics: proxy, cdn, cache, apache, hacktoberfest, forwardproxy, http2, http3, quic, reverseproxy
Last push: 2026-08-26T19:57:45+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 6150, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1977, forks 872 (observed 2026-08-28T04:06:01.444777+00:00)

## What it is
Apache Traffic Server is a fast, scalable, and extensible HTTP/1.1 and HTTP/2 compliant caching proxy server written in C++. It powers major CDNs and content providers, serving multiple terabits per second of traffic, and supports plugins for building large-scale web applications.

## Use cases
- set up a caching reverse proxy for a website
- run a forward proxy with content filtering
- build a CDN edge cache server
- add load balancing and keep-alive to backend services
- cache frequently requested web pages and API responses
- proxy HTTP/2 and HTTP/3 traffic at scale
- write custom plugins to modify HTTP headers or cache behavior

## When to choose
- you need a battle-tested, high-performance caching proxy that scales to terabits per second
- you want an extensible proxy with a plugin API for custom request handling
- you are building CDN or large-scale cloud infrastructure
- you need HTTP/1.1, HTTP/2, and emerging protocol support in a self-hosted proxy

## When to avoid
- you need a simple lightweight reverse proxy with minimal configuration (nginx or Caddy may suffice)
- you only need TLS termination or static file serving
- you lack operations capacity to tune and maintain a complex proxy deployment

## Facets
- artifact type: service
- maturity: stable
- function: caching, proxy, http-server, load-testing, plugin-system
- domain: networking, web-development, infrastructure-as-code, self-hosted, performance
- platform: bsd, cross-platform, self-hosted
- tags: http-proxy, reverse-proxy, forward-proxy, cdn, http2, http3, quic, cache-server, traffic-management, linux, macos

## Member repositories
- apache/trafficserver (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:01.444777+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:04:46.396321+00:00, confidence not recorded.
  - readme: https://github.com/apache/trafficserver (fetched 2026-08-28T04:06:01.444777+00:00, sha a9d579cdc648)
  - homepage: https://trafficserver.apache.org/ (fetched 2026-08-29T10:43:46.839094+00:00, sha 51bbec2b5031)
  - site_page: https://docs.trafficserver.apache.org/en/latest/index.html (fetched 2026-08-29T10:43:46.848035+00:00, sha 3fe005a29341)
  - site_page: https://trafficserver.apache.org/downloads.html (fetched 2026-08-29T10:43:46.849703+00:00, sha 55ac7c11c7af)
- Data as of 2026-08-30T08:39:29.467469+00:00.