Apache Traffic Control is an Open Source implementation of a Content Delivery Network

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  1. 991a424 ATC Collaborators for August 2025 (#8137) by asf-ci-trafficcontrol · 5 days ago master
  2. e341a5e Use Python 3.12 to build documentation. (#8136) by Zach Hoffman · 3 weeks ago
  3. 9d5df23 ATC Collaborators for July 2025 (#8134) by asf-ci-trafficcontrol · 3 weeks ago
  4. e8d88af Update Go version to 1.23.11 (#8135) by asf-ci-trafficcontrol · 3 weeks ago
  5. 164ae79 fix: list of ATS tags should be sorted as version-numbers to achieve the actual latest version (#8131) by Mohammad KhoshZaban · 5 weeks ago

Apache Traffic Control

Apache Traffic Control allows you to build a large scale content delivery network using open source. Built around Apache Traffic Server as the caching software, Traffic Control implements all the core functions of a modern CDN.

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Build Status [^1]

Build Status Documentation Status

Code Status [^1]

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CodeQL - C++
CodeQL - Go
CodeQL - Java
CodeQL - Javascript
CodeQL - Python

Test Status [^1]

ComponentUnit TestsIntegration Tests
Go LibrariesGo Lib Unit Tests Codecov-
Traffic OpsTraffic Ops Unit Tests Codecov Traffic Ops API Contract TestsTO Go Client Integration Tests Codecov
Traffic RouterTraffic Router Tests CodecovTR Ultimate Test Harness
Traffic MonitorTraffic Monitor Unit Tests CodecovTM Integration Tests
T3CT3C Unit Tests CodecovT3C Integration Tests
Traffic StatsTraffic Stats Unit Tests Codecov-
GroveGrove Unit Tests Codecov-
Traffic Portal-TP Integration Tests
TCHC-TC Health Client Integration Tests

Documentation [^2]

Components [^2]

  • Traffic Ops is the RESTful API service for management and monitoring of all servers in the CDN.
  • Traffic Portal is the web GUI for managing and monitoring the CDN via the Traffic Ops API.
  • Traffic Router uses DNS and HTTP302 to redirect clients to the closest available cache on the CDN.
  • Traffic Monitor uses HTTP to poll the health of caches and provide this information to Traffic Router.
  • Traffic Stats acquires and stores real-time metrics and statistics into an InfluxDB for charting and alerting.

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[^1]: *Status links point to the unreleased master branch

[^2]: Documentation links point to the latest which is the unreleased master branch and are neither stable nor necessarily accurate for any given supported release.