Use when ER_LOCK_DEADLOCK or ER_LOCK_WAIT_TIMEOUT errors appear, designing lock-discipline for concurrent transactions, reading SHOW ENGINE INNODB STATUS deadlock section, tuning innodb_deadlock_detect, or handling Galera certification-COMMIT deadlocks. Prevents the common mistake of expecting deadl
Use when ER_LOCK_DEADLOCK or ER_LOCK_WAIT_TIMEOUT errors appear, designing lock-discipline for concurrent transactions, reading SHOW ENGINE INNODB STATUS deadlock section, tuning innodb_deadlock_detect, or handling Galera certification-COMMIT deadlocks. Prevents the common mistake of expecting deadlocks to vanish via retry-without-design-fix, missing gap-lock dynamics, or treating Galera ER_LOCK_D