MYSQLND_MS REVAMPED: Single and multi-master read/write consistency enforcing in MySQL asynchronous clusters with PHP and mysqlnd_ms extension
NOTE: The service level and consistency feature is one of the most changed areas of the mymysqlnd_ms fork. Functionalities like server side read consistency and server side write consistency allow transparent migration to MySQL asyncronous clusters in almost all use cases with no or at most extremely small effort and application changes.
Different types of MySQL cluster solutions offer different service and data consistency levels to their users. Any asynchronous MySQL replication cluster offers eventual consistency by default. A read executed on an asynchronous slave may return current, stale or no data at all, depending