Varnish is a high-performance HTTP accelerator designed for sites with large amounts of non-personalized dynamic content, such as online newspapers. License: BSD License (revised) Changes:
This release has loads of new features, including load balancing (random and round-robin), even better performance, ESI support, more complete VCL, serving of objects past their expiration date, multiple backends, rewriting of URLs, PURGE over HTTP support, better handling of large numbers of viewers, improved documentation, a regression test framework, and much more.