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The Varnish Reference Manual¶

The VCL language¶

  • VCL - The Varnish Configuration Language
  • VCL Variables
  • VCL backend configuration
  • VCL backend health probe
  • Varnish Processing States

A collection of VCL Design Patterns is available in addition to these reference manuals.

Bundled VMODs¶

  • VMOD blob - Utilities for the VCL blob type, encoding and decoding
  • VMOD cookie - Varnish Cookie Module
  • VMOD directors - Varnish Directors Module
  • VMOD proxy - Varnish Module to extract TLV attributes from PROXYv2
  • VMOD purge - Varnish Purge Module
  • VMOD std - Varnish Standard Module
  • VMOD unix - Utilities for Unix domain sockets

The CLI interface¶

  • VarnishAdm - Control program for Varnish
  • CLI - The commands varnish understands

Logging and monitoring¶

  • VSL - The log records Varnish generates
  • VSLQ - Filter/Query expressions for VSL
  • VarnishLog - Logging raw VSL
  • VarnishNCSA - Logging in NCSA format
  • VarnishHist - Realtime reponse histogram display
  • VarnishTop - Realtime activity display

Counters and statistics¶

  • VSC - The statistics Varnish collects
  • VarnishStat - Watching and logging statistics

The Varnishd program¶

  • VarnishD - The program which does the actual work

Varnishtest¶

  • VTC - Language for writing test cases
  • VarnishTest - execute test cases
  • VMOD vtc - Utility module for varnishtest

For Developers & DevOps¶

  • Shell tricks
  • VMODS - Extensions to VCL
  • VSM - Shared memory use
  • VDIR - Backends & Directors
  • VCLI - CLI protocol API

Code-book¶

  • VTLA - Varnish Three Letter Acronyms

Table of Contents

  • The Varnish Reference Manual
    • The VCL language
    • Bundled VMODs
    • The CLI interface
    • Logging and monitoring
    • Counters and statistics
    • The Varnishd program
    • Varnishtest
    • For Developers & DevOps
    • Code-book

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