Redis or: How I learned to stop worrying and love the unstable version(blog.hashtagify.me)
blog.hashtagify.me
Redis or: How I learned to stop worrying and love the unstable version
http://blog.hashtagify.me/2011/06/19/redis-or-how-i-learned-to-stop-worrying-and-love-the-unstable-version/
On a slightly more serious note, jemalloc is a pretty incredible piece of systems software. If you're experiencing issues with memory fragmentation or lock contention in malloc(3) it's definitely worth looking at.