5857. Proxy & Routing: routing rollback — Harden the workflow against privilege or data-exposure risks. — subscription billing — Java Spring/JDBC

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

Scenario: A subscription billing application must handle routing rollback. Harden the workflow against privilege or data-exposure risks. 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

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 routing rollback.

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 routing

Disable database protections and repair inconsistent rows manually after routing rollback runs.

Additional Explanation

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

Verified

Option 3: Run routing rollback without defining transaction boundaries, retry behavior, or

Run routing rollback 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 routing rollba

Use a parameterized, transaction-aware MySQL 8 implementation for routing 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.