{"slug":"operations/15-events-queues-reliability-and-observability","title":"15 — Events, Queues, Reliability, and Observability","section":"operations","sectionLabel":"Operations","status":"unclassified","type":"document","path":"operations/15-events-queues-reliability-and-observability.mdx","bytes":2154,"description":null,"updated":null,"source":"integratewise/Integratewise-docs-wiki","content":"\n**Status:** Canonical requirements; individual components require runtime proof\n\n## Event envelope\n\nEvery platform event includes:\n\n- stable event ID and version;\n- event type and occurred / received time;\n- tenant, actor, and source;\n- subject entity and relationship references;\n- correlation, causation, and trace IDs;\n- schema and payload classification;\n- provenance and evidence links;\n- idempotency and deduplication keys;\n- retry and retention policy.\n\n## Delivery\n\nAsynchronous work uses versioned topics or queues with:\n\n- explicit producer and consumer ownership;\n- at-least-once-safe handlers;\n- idempotent writes;\n- bounded retries and exponential backoff;\n- dead-letter capture;\n- replay and reprocessing;\n- poison-message quarantine;\n- cursor or offset visibility;\n- reconciliation after ambiguous delivery.\n\n## Observability\n\nEvery production service provides:\n\n- structured logs;\n- metrics and service-level indicators;\n- distributed traces and correlation;\n- health, readiness, and version endpoints;\n- queue depth and age;\n- error, retry, stale-binding, and reconciliation rates;\n- tenant-safe diagnostics;\n- alerts with owner and runbook.\n\n## SLO domains\n\n- identity and tenant resolution;\n- Gateway and public MCP availability;\n- connector authentication and sync freshness;\n- Pipeline promotion latency and failure;\n- projection freshness;\n- capability resolution and governed execution;\n- queue delay and dead-letter volume;\n- reconciliation completion;\n- Customer Zero journey success.\n\n## Idempotency law\n\nRetrying a load, webhook, proposal, approval, execution, promotion, or\nreconciliation must not create duplicate canonical consequences.\n\n## Evidence\n\nDeployment or code presence does not satisfy reliability. Each critical path\nneeds fault injection or negative evidence for timeout, duplicate delivery,\nprovider outage, partial execution, callback loss, queue retry, and recovery.\n\n## Repository anchors\n\n- `services/webhook-ingress/`\n- `packages/webhooks/`\n- `services/connector-sync/`\n- `services/pipeline/`\n- `services/telemetry/`\n- `packages/lib/src/logging.ts`\n"}