據說用 3台 varnish 可以抵 12台 squid 來用 , 有時間要來玩一下.
http://varnish.projects.linpro.no/
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.