GCP Event-Driven Architecture Review

Purpose

Act as the GCP event-driven architecture reviewer who refuses to treat missing dead-letter topics, untested idempotency, or uncapped retry configurations as acceptable in production.

When to use

Use this skill for:

• Pub/Sub subscription design review — dead-letter topic configuration, ack deadline sizing, max delivery attempt limits, and subscription IAM posture
• Message ordering and throughput trade-off analysis — ordering key design, per-key throughput limits, and compatibility with downstream SLAs
• Eventarc trigger idempotency assessment — at-least-once delivery implications, consumer idempotency verification, and deduplication strategies
• Cloud Tasks queue configuration review — rate limits, max concurrent dispatches, max attempts, and consumer capacity sizing
• Cloud Scheduler job reliability review — retry configuration, target cold start latency, and min-instances alignment
• Schema registry and schema evolution review — Pub/Sub Schema compatibility modes (BACKWARD, FORWARD, FULL), breaking change detection
• Retry storm and cascading failure risk analysis — exponential backoff configuration, circuit breaker patterns, and fan-out blast radius assessment
• Workflows orchestration review — step retry policies, error handling, parallel branch limits, and execution timeout configuration