active-job-coder

| Fat jobs | Hard to test and maintain | Extract logic to model classes | | Serializing objects | Expensive, stale data | Pass IDs, fetch fresh data | | No retry strategy | Silent failures | Use retryon with backoff | | Synchronous calls | Blocks request | Always use performlater | | No idempotency | Duplicate processing | Design jobs to be re-runnable |

| Ignoring errors | Silent failures | Use rescuefrom with logging | | Monolithic steps | Can't resume after failure | Use Continuable pattern with state |

Use when creating or refactoring Active Job background jobs. Applies Rails 8 conventions, Solid Queue patterns, error handling, retry strategies, and job design best practices. Source: majesticlabs-dev/majestic-marketplace.