Static page caching with asynchronous "ESI" capabilities and graceful recaching. This is more of an academic exercise and a hobby project than anything else. It's not an attempt to compete with other caching modules, like Boost.
Goals
Work out of the box for any Drupal installation
Scalability through graceful recaching either by queueing requests or background processing
Extra performance through page_cache_fastpath() and mod_rewrite rules
Prevent thundering herds
Supply self-contained cache invalidation without having to rely on a cron job handling this