| retry every error | explicit classification |
| synchronized retries | exponential backoff with jitter |
| infinite attempts | budget and DLQ |
| blind replay | dry run, rate limit, idempotency |
| ignored DLQ | age/volume SLO and owner |
| Monitor retry amplification, DLQ age, failure class, replay success, and dependency health. Circuit-break retry publication when the failing dependency cannot recover under load. | |
| ## Test yourself | |
| 1. What creates a retry storm? | |
| 2. How should replay be throttled? | |
| 3. When must key ordering override non-blocking retry? | |
Continue to professional.md. | |