Drizzle: A High-Performance Microkernel DBMS for Scale-Out Applications Drizzle is a community-driven project based on the popular MySQL DBMS that is focused on MySQL's original goals of ease-of-use, reliability and performance. The Drizzle team is removing non-essential code, refactoring the remaining code, switching to a microkernel architecture (with well-defined APIs) and generally making Drizzle into a lean, mean query-running machine. Participation is easy and fun. The Drizzle project is run using open source software (like Bazaar) on open and public resources (like and irc://irc.freenode.net/#drizzle and wikia) in a true open source fashion. The Drizzle project also has clear guidelines for participation, as well as simple guidelines for licensing and use.