The top open request from our recent survey has been for memcached. Memcached is a simple, fast and scalable in-memory object caching system. Dynamic web applications use memcached to store frequently used data, reducing database load. The Heroku memcached add-on is built on the NorthScale distribution of memcached (NorthScale Memcached Server) which includes an advanced, per-user security model. The service is fully managed by NorthScale – a company formed and run by leaders of the memcached open source project.
All Heroku users can use the add-on today. We’ll be using this beta period to analyze usage, determine final pricing, and collect user feedback. We are aiming for a late April full release of the add-on.