How can you combine PostgreSQL's deadlock detection with application-level retry logic to improve reliability?

hard📝 Application Q9 of 15

PostgreSQL - Transactions and Concurrency

AIgnore deadlock errors and continue processing

BCatch deadlock errors in the app and retry the transaction after a delay

CDisable deadlock detection and handle locks manually

DUse autocommit mode to avoid transactions

Step-by-Step Solution

Solution:

Step 1: Understand deadlock detection and application retries
PostgreSQL aborts one transaction on deadlock; the app can catch this error.
Step 2: Implement retry logic
Retrying the transaction after a short delay helps recover from deadlocks gracefully.
Final Answer:
Catch deadlock errors in the app and retry the transaction after a delay -> Option B
Quick Check:
Deadlock retry = Improved reliability [OK]

Quick Trick: Retry transactions after deadlock errors in app code [OK]

Common Mistakes:

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