SQL Server Transaction Isolation Level Causing Deadlocks with Concurrent Inserts
I'm experiencing deadlocks when multiple processes are trying to insert records into the same table concurrently... I'm using SQL Server 2019 and have set the default transaction isolation level to `SERIALIZABLE`. I thought this would ensure data integrity, but it seems to be causing more issues than it's preventing. My insert statement looks like this: ```sql BEGIN TRANSACTION; INSERT INTO Orders (OrderID, CustomerID, OrderDate) VALUES (NEWID(), 'CUST01', GETDATE()); COMMIT; ``` I've tried switching to `READ COMMITTED` isolation level to see if it helps, but I'm still running into deadlocks. The behavior messages I get are as follows: ``` Transaction (Process ID xx) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. ``` I also enabled deadlock graph tracing using SQL Server Profiler, and I've noticed that the deadlocks consistently happen when two transactions are trying to insert records for the same `CustomerID`. Are there any best practices or strategies I can implement to mitigate these deadlocks? Should I consider using a different isolation level or perhaps batch the inserts to reduce the contention? I'm working with Sql in a Docker container on Linux.