Varnish cache，或称Varnish，是一套高效能的反向网站快取服务器（reverse proxy server）。
Varnish目前被用在挪威最大的报社Verdens Gang上。下载：http://www.varnish-software.com/sites/default/files/varnish-2.1.4.tar.gz
Changes:
- A bug in the binary heap layout caused inflated object counts, this has been fixed.
- Much more comprehensive documentation.
- A DNS director that uses DNS lookups for choosing which backend to route requests to has been added.
- The client director now uses the variable client.identity for choosing which backend to send a given request to.
- String representation of now, making it easier to add Expires headers
- Portability fixes for Solaris.
- Various bug fixes.