5279. Stored Programs: routine rollback — Build success, failure, concurrency and scale tests. — messaging — Go database/sql
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Scenario: A messaging application must handle routine rollback. Build success, failure, concurrency and scale tests. Explain the invariant, SQL strategy, transaction/locking behavior, failure handling, observability and test plan. Use MySQL 8-oriented syntax where applicable.
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Answer & Explanation
4
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Option 1: Run routine rollback without defining transaction boundaries, retry behavior, or
Run routine rollback without defining transaction boundaries, retry behavior, or production validation.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.
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Correct Answer
Option 2: Use a parameterized, transaction-aware MySQL 8 implementation for routine rollba
Use a parameterized, transaction-aware MySQL 8 implementation for routine rollback, 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 3: Use unparameterized dynamic SQL and rely only on application-side validation for
Use unparameterized dynamic SQL and rely only on application-side validation for routine rollback.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.
Verified
Option 4: Disable database protections and repair inconsistent rows manually after routine
Disable database protections and repair inconsistent rows manually after routine rollback runs.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.