ssd cache open source projects

• Flashcache - http://github.com/facebook/flash... - caching writes.
  Facebook opensourced component it uses to speed up their MySQL servers.
• bcache - http://bcache.evilpiepirate.org/ - caching reads.
  Another patch to kernel that is progressing in development (i.e. write behind caching developed, beta version should be up in Oct'10, production version in Nov'10, according to developer - Kent Overstreet).