symfony:rate-limiting

Rate Limiting (Symfony) Use when Implementing asynchronous workflows with Messenger/Scheduler/Cache. Stabilizing retries and failure transports. Default workflow Define async contract and delivery semantics. Implement idempotent handlers and routing strategy. Configure retries, failure transport, and observability. Validate success/failure replay scenarios. Guardrails Assume at-least-once delivery, not exactly-once. Keep handlers deterministic and side-effect aware. Surface poison-message handling strategy. Progressive disclosure Use this file for execution posture and risk controls. Open references when deep implementation details are needed. Output contract Async config/handlers updated. Retry/failure policy decisions. Operational validation evidence. References reference.md docs/complexity-tiers.md