In the works over the past year (v2.0 was released May 2010), Apache Traffic Server v3.0.0 is the result of contributions from more than 30 developers and contributors. Technical highlights include:

– Over 1,000 "commits" (code, patches, or documentation written directly to the code repository);

– 380+ bug tickets resolved;

– 10 releases have been made during the development phase (v2.1.0 – 2.1.9)

II. New features/improvements

– Full 64-bit support;

– Client side IPv6 support;

– WCCP (Web Cache Communication Protocol);

– Clustering is functional and supported (many benefits include an efficient distributed cache);

– Major plug-in API improvements, making the APIs more feature rich and easier to use;

– Support for many platforms, including OSX, Solaris and FreeBSD (Linux, of course, was always supported);

– New improved RAM cache algorithms, for better performance and memory utilization

– Many configurations are now configurable per transaction (or per mapping rule)

– Many improvements in statistics and management APIs;

– Multiple accept threads, and a dedicated DNS thread:

– Build environment is now much more flexible, and package owner friendly;

– Many, many bug fixes for improved stability and functionality.

III. Performance improvements

– Overall throughput is 2-3x improved over v2.0 (depending on the traffic patterns)

– Response latency is up to 5x better than v2.0

– Benchmark: Serving small objects out of RAM cache, a high end server has showed over 220,000 requests / second

– Benchmark: Serving small objects that are not cacheable, the same high end server could proxy 100,000 requests / second

(NOTE: all benchmarks are on local network, with keep-alive)

Get Involved! Apache Traffic Server downloads, documentation, mailing lists, and related resources are available at http://trafficserver.apache.org/.