Scenario: A HRMS application must handle connection multiplexing. 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
Answers
Verified
Option 1: Use unparameterized dynamic SQL and rely only on application-side validation for
Use unparameterized dynamic SQL and rely only on application-side validation for connection multiplexing.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.
Verified
Option 2: Disable database protections and repair inconsistent rows manually after connect
Disable database protections and repair inconsistent rows manually after connection multiplexing runs.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.
Verified
Option 3: Run connection multiplexing without defining transaction boundaries, retry behav
Run connection multiplexing without defining transaction boundaries, retry behavior, or production validation.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.
Verified
Correct Answer
Option 4: Use a parameterized, transaction-aware MySQL 8 implementation for connection mul
Use a parameterized, transaction-aware MySQL 8 implementation for connection multiplexing, validate the invariant, and explicitly test concurrency, retries and recovery.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.