Varnish
From Wikitech
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| − | You may want to read [[Bits varnish testing]] instead | + | '''Varnish''' is a fast caching proxy, and can be used as an alternative to [[Squid]] in a reverse caching accelerator setup. |
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| + | We currently use Varnish for serving <tt>bits.wikimedia.org</tt>. | ||
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| + | You also may want to read [[Bits varnish testing]] instead, for Domas his findings during a pilot project. | ||
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Many of these are probably already taken care of by our friends at [http://www.wikia.com Wikia], and therefore possibly also within Varnish itself... | Many of these are probably already taken care of by our friends at [http://www.wikia.com Wikia], and therefore possibly also within Varnish itself... | ||
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| + | == External links == | ||
| + | * [http://varnish.projects.linpro.no Varnish main web site] | ||
| + | * [http://assets.en.oreilly.com/1/event/27/Varnish%20-%20A%20State%20of%20the%20Art%20High-Performance%20Reverse%20Proxy%20Presentation.pdf OSCON presentation about Varnish at Wikia by Arthur Bergman], containing useful information about performance tuning and some neat features as well. | ||
Revision as of 14:52, 26 July 2010
Varnish is a fast caching proxy, and can be used as an alternative to Squid in a reverse caching accelerator setup.
We currently use Varnish for serving bits.wikimedia.org.
You also may want to read Bits varnish testing instead, for Domas his findings during a pilot project.
Mark intends to test Varnish for feasibility of using it instead of Squid for Wikimedia CDN purposes.
Things that need special consideration
- HTCP purging
- Immediate purging of cache objects (nuke?)
- Header normalization (Host, Accept-Encoding...)
- Two-layer setup (CARP style)
- Compatible logging
- Request stats
Would be nice
- SSL
- IPv6
Many of these are probably already taken care of by our friends at Wikia, and therefore possibly also within Varnish itself...
External links
- Varnish main web site
- OSCON presentation about Varnish at Wikia by Arthur Bergman, containing useful information about performance tuning and some neat features as well.
