Varnish

HTTP accelerator and reverse proxy

52
Critical - needs support
Funding
At risk
Maintenance
Moderate
Contributors
Declining
Bus Factor
High risk
This project needs your help! Consider contributing code, documentation, or funding to help maintain this critical infrastructure.
Metrics last updated: 6 days ago (2026-02-07)

Overview

Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. It focuses on HTTP.

Importance

  • Powers high-traffic websites
  • Foundation for web acceleration
  • Critical for content delivery
  • Used by major sites

Key Features

  • HTTP caching
  • VCL configuration language
  • ESI support
  • Grace mode

Sustainability

Varnish has commercial backing from Varnish Software, but the open-source project has limited resources.

Dependencies

⬆️ Depends On (1)
Varnish
unknown

Dependency Chain

Upstream
Linux Kernel
Varnish

Impact Analysis

1 Direct Dependencies
0 Dependent Projects
🔝 Top-level project