Transactions Summary
MySQL transactions provide ACID guarantees via InnoDB. Use START TRANSACTION, COMMIT, ROLLBACK, and SAVEPOINT. Choose isolation levels wisely, watch for deadlocks, and keep transactions short.
MySQL
Beginner
3 min read
MySQL Transactions Summary
Example
-- Transaction checklist:
-- [x] Use InnoDB engine
-- [x] Wrap related DML in START TRANSACTION ... COMMIT
-- [x] Handle exceptions with ROLLBACK in application
-- [x] Use REPEATABLE READ (default) or READ COMMITTED
-- [x] Lock rows with FOR UPDATE when needed
-- [x] Never call external APIs inside transactions
-- [x] Monitor with INNODB_TRX and SHOW ENGINE INNODB STATUS Pro Tip
Transactions are the most important concurrency tool in MySQL — use them correctly from day one.