WebScaleSQL: A collaboration to build upon the MySQL upstream

What this post added

This post announces WebScaleSQL, a collaboration among Facebook, Google, LinkedIn, and Twitter to build upon the upstream MySQL branch. Key contributions include an automated framework for running and publishing MySQL's built-in test system (mtr) results, a new suite of stress tests and a prototype automated performance testing system, changes to existing tests and code structure to improve maintainability, performance improvements such as buffer pool flushing enhancements and query optimizations, and new features like `super_read_only` and sub-second client timeouts. Future work includes contributing an asynchronous MySQL client, moving production-tested table, user, and compression statistics into WebScaleSQL, and adding the Logical Read-Ahead mechanism.