5439. Transactions & XA: XA participant inventory — Build success, failure, concurrency and scale tests. — finance — Go database/sql
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Scenario: A finance application must handle XA participant inventory. 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
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Option 1: Run XA participant inventory without defining transaction boundaries, retry beha
Run XA participant inventory 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 XA participant
Use a parameterized, transaction-aware MySQL 8 implementation for XA participant inventory, 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 XA participant inventory.
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 XA part
Disable database protections and repair inconsistent rows manually after XA participant inventory runs.
Additional Explanation
Correctness depends on explicit invariants, safe SQL, transaction/concurrency handling and verification.