Integration and Synchronization Troubleshooting Questions

Focuses on diagnosing and resolving integration and data synchronization problems between systems and services. Topics include identifying missing or inconsistent data, real time delays and intermittent failures, and end to end latency; verifying application programming interface connectivity, authentication, and authorization; examining message queueing behavior, backpressure, and retry semantics; handling idempotency and duplicate message issues; resolving schema mismatches, data mapping and validation errors; using monitoring, logging, and distributed tracing to correlate events; testing data flows, performing backfill and replay strategies, and implementing resilient error handling and reconciliation processes. Emphasis is on diagnostic methodology, hypothesis driven testing, and cross system coordination rather than only code changes.