Brian Aker, MySQL's director of architecture, has unveiled Drizzle, a database project aimed at powering websites with massive concurrency as well as trimming superfluous functionality from MySQL.
Drizzle will have a micro-kernel architecture with code being removed from the Drizzle core and moved through interfaces into modules. Akers has already selected particular functionality for removal: modes, views, triggers, prepared statements, stored procedures, query cache, data conversion inserts, access control lists and some data types.
According to the Drizzle FAQ, the database will be licensed under the GPLv2 and be available on Linux and OS X platforms. Aker stated that he is unwilling to support platforms without a proper GNU toolchain, such as Windows.
"In addition Drizzle will include the latest InnoDB code; You [sic] don't have to wait for MySQL 6.0 or go to the trouble of annually downloading and installing the InnoDB plugin from Oracle just to get access to the latest and fastest InnoDB version", Michael Widenius, MySQL's AB co-founder and original author of MySQL, said in a blog post.
Widenius said that Drizzle was made possible by Sun's acquisition of MySQL and the project had the blessing of Sun's upper management.
No official release schedule has yet been set for Drizzle, but instructions for developers to check out the latest code are available from the Drizzle Wiki.