Q4M - a Message Queue for MySQLQ4M (Queue for MySQL) is a message queue licensed under GPL that works as a pluggable storage engine of MySQL 5.1, designed to be robust, fast, flexible. It is already in production quality, and is used by several web services (see Users of Q4M). To start using Q4M, download either a binary or source distribution from the install page, and follow the installation instructions. A small tutorial is
