MySQL: Deadlocks Occurring During High Concurrency with Bulk Update Queries
I'm attempting to set up I'm currently working with a deadlock scenario when executing bulk update queries on a MySQL 8.0 database... The application allows multiple users to update records in the same table simultaneously. I'm using InnoDB as my storage engine, and I've enabled row-level locking, yet deadlocks occur frequently, particularly under high concurrency. The update statement looks something like this: ```sql UPDATE users SET last_login = NOW() WHERE id IN (1, 2, 3, 4, 5); ``` When multiple users try to execute similar updates, I often see the following behavior in my application logs: ``` Deadlock found when trying to get lock; try restarting transaction ``` I've tried optimizing the queries and even added indexes to the `last_login` column, but the question continues. I also ran the queries in a transaction block: ```sql START TRANSACTION; UPDATE users SET last_login = NOW() WHERE id IN (1, 2, 3, 4, 5); COMMIT; ``` Additionally, I’ve experimented with the isolation level by setting it to `READ COMMITTED`, but it didn’t yield any improvement. I suspect that the deadlock might be caused by the order of row locks, but I’m not sure how to diagnose or resolve this effectively. Is there a recommended approach to minimize or avoid deadlocks in this scenario? Any insights into best practices for managing concurrent updates in MySQL would be greatly appreciated! This is my first time working with Sql latest. Could this be a known issue?