Skills for Development & IT, page 3 55 Skills

• Check circuit-breaker gaps

  Checks calls to external services for missing breakers, unbounded retries and unclear fallbacks.

  Code & review · Advanced

• Check fencing tokens on locks

  Checks distributed locks for whether a rising token limits write rights after expiry and rejects old holders.

  Code & review · Advanced

• Check consumer lag and backpressure

  Checks pipelines for growing lag, missing producer wait and unbounded retries.

  Code & review · Advanced

• Check retry and backoff

  Checks client and worker retries for missing Retry-After handling, missing jitter and unbounded budgets that amplify overload.

  Code & review · Advanced

• Check request IDs in traces

  Checks whether one request ID is accepted, minted and carried through HTTP, queues and logs.

  Code & review · Advanced

• Check idempotency keys

  Checks write paths for missing, unstable or too-short-lived idempotency keys that allow double side effects on retry.

  Code & review · Advanced

• Check poison message quarantine

  Checks whether repeatedly failing queue messages are quarantined with context instead of blocking consumers forever.

  Code & review · Advanced