Row-level locking, mvcc, multiple write threads. Mysql (default Innodb engine) is actually pretty good at io scalability since ~ 5.5 (2010). We have google, pe

Row-level locking, mvcc, multiple write threads. Mysql (default Innodb engine) is actually pretty good at io scalability since ~ 5.5 (2010). We have google, percona, Facebook, oracle to thank for this.