Welcome to the Varnish project

Varnish is a state-of-the-art, high-performance HTTP accelerator. It uses the advanced features in Linux 2.6, FreeBSD 6/7 and Solaris 10 to achieve its high performance.

Some of the features include

• A modern design
• VCL - a very flexible configuration language
• Load balancing with health checking of backends
• Partial support for ESI
• URL rewriting
• Graceful handling of "dead" backends
• more features...

Varnish is free software and is licenced under a modified BSD licence. Please read the introduction to get started with Varnish.

See what people blog about varnish

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Trouble, Errata and things you should know

Here is our running log of things you probably want to know

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News

2010-02-05 Varnish User Group meeting 2 announced

On the 29th and 30th of March 2010 we will hold the next Varnish User Group meeting in Amsterdam.

For more information and how to sign up see the VUG2 page.

2009-12-16 Varnish 2.0.6 released

Varnish 2.0.6 has just been released. This release contains multiple changes, amongst them:

• Fix off-by-one error in ESI handling
• Bug fixes related to session lingering
• Backend probes should now work correctly with more servers
• Portability fixes
• Make it possible to specify the per-thread stack size, useful for 32 bit systems

There are some old news as well.

Source

• Download Varnish from SourceForge
• Pre 2.0 releases
• Repository
• Short term roadmap details changes in future releases
• PostTwoShoppingList is a more strategic overview of what could be done in the future

Documentation

• an introduction to varnish. Read this first.
• Getting started, read this also.
• The various features of varnish explained.
• Installing Varnish
• Frequently Asked Questions (FAQ)
• VCL Syntax, formalized and detailed descriptions.
• VCL Examples, small snippets for doing common tasks.
• CLI, CLI documentation
• VTLA, VTLA documentation

Resources

• varnish-cache.com is our commercial sister-site
• Commercial support can be bought
• Debugging Varnish
• Performance tuning of Varnish and the underlying OS
• Developer resources
• Accelerating Wordpress with Varnish

Community support

• IRC channel: #varnish on irc.linpro.no
• Mailing lists
• Varnish User Group meetings

About this Wiki

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