5548. Concurrency & Locks: deadlock graph analysis — Automate the workflow with idempotent retries and observability. — inventory — PHP PDO

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

Scenario: A inventory application must handle deadlock graph analysis. Automate the workflow with idempotent retries and observability. Explain the invariant, SQL strategy, transaction/locking behavior, failure handling, observability and test plan. Use MySQL 8-oriented syntax where applicable.

Looking for the latest Sarkari Result 2026 updates? Check the latest government exam results, merit lists and result updates on Sarkari Resultess.

Answer & Explanation

4 Answers

Verified Correct Answer

Option 1: Use a parameterized, transaction-aware MySQL 8 implementation for deadlock graph

Use a parameterized, transaction-aware MySQL 8 implementation for deadlock graph analysis, validate the invariant, and explicitly test concurrency, retries and recovery.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified

Option 2: Use unparameterized dynamic SQL and rely only on application-side validation for

Use unparameterized dynamic SQL and rely only on application-side validation for deadlock graph analysis.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified

Option 3: Disable database protections and repair inconsistent rows manually after deadloc

Disable database protections and repair inconsistent rows manually after deadlock graph analysis runs.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.

Verified

Option 4: Run deadlock graph analysis without defining transaction boundaries, retry behav

Run deadlock graph analysis without defining transaction boundaries, retry behavior, or production validation.

Additional Explanation

Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.