Replication, innodb, benchmark, transactions, deadlocks, locking, acid, isolation, snapshot, READ-COMMITTED, REPEATABLE-READ, data consistency, row-based, statement-based, consistent read, dirty read, gap-locking, isolation levels, lock in share mode, locking reads, mutex contention, next-key locking, non-repeatable read, phantom reads, read-uncommitted, select for update, serializable, shared locks, MySQL, Performance