[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"glossary-event-ordering::en":3,"gloss-cluster-event-ordering::en":26,"gloss-next-event-ordering::en":9},{"slug":4,"category":5,"name":6,"definition":7,"meta_desc":8,"faq":9,"schema_markup":9,"related":10},"event-ordering","integration","Event Ordering","Event ordering is the guarantee, usually the absence of one, that a consumer sees events in the sequence they happened. Delivery semantics answer how many times a message arrives; ordering answers in what sequence, and the two are independent. A system can be exactly-once and still hand you an update before the create it depends on. Order is lost for ordinary reasons. A retry moves a failed event behind later ones. Parallel consumers work partitions at different speeds. A webhook fanning out over the internet crosses networks with different latencies. Most queues guarantee order only within a partition or a key, which means order holds per customer or per record if, and only if, the producer partitions on that key. The failure is quiet and data-shaped: a record ends up in the older state because the older event arrived last, and nothing anywhere reports an error. The fix is not to demand global ordering, which is expensive and usually unnecessary. It is to make the consumer independent of arrival order. Carry a monotonic version or a source timestamp on every event and discard any update older than what is already stored, judged on the source clock rather than yours. Make handlers idempotent so a replay is harmless. Where an event genuinely depends on an earlier one, either park it briefly and re-drive it, or treat the event as a signal and re-read current state from the source instead of trusting the payload. That last pattern, thin events plus an authoritative re-read, sidesteps most ordering problems entirely at the cost of one extra call per event, and it is the design most integrations should reach for before they reach for ordering guarantees.","Event ordering is the guarantee consumers rarely get: how retries and partitions reorder events, and how version checks make a handler order-independent.",null,[11,14,17,20,23],{"slug":12,"name":13},"delivery-semantics","Delivery Semantics",{"slug":15,"name":16},"eventual-consistency","Eventual Consistency",{"slug":18,"name":19},"idempotency","Idempotency",{"slug":21,"name":22},"message-queue","Message Queue",{"slug":24,"name":25},"publish-subscribe","Publish\u002FSubscribe (Pub\u002FSub)",[27,31,34,37,40,44,47,50,53,56,59,62],{"slug":28,"category":5,"name":29,"updated_at":30},"backend-for-frontend","Backend for Frontend (BFF)","2026-08-24T02:46:38+00:00",{"slug":32,"category":5,"name":33,"updated_at":30},"concurrency-limit","Concurrency Limit",{"slug":35,"category":5,"name":36,"updated_at":30},"field-mapping","Field Mapping",{"slug":38,"category":5,"name":39,"updated_at":30},"function-schema","Function Schema",{"slug":41,"category":5,"name":42,"updated_at":43},"grpc","gRPC","2026-08-24T02:46:37+00:00",{"slug":45,"category":5,"name":46,"updated_at":30},"integration-marketplace","Integration Marketplace",{"slug":48,"category":5,"name":49,"updated_at":30},"ip-allowlist","IP Allowlist",{"slug":51,"category":5,"name":52,"updated_at":30},"json-web-token","JSON Web Token (JWT)",{"slug":54,"category":5,"name":55,"updated_at":30},"mcp-server","MCP Server",{"slug":57,"category":5,"name":58,"updated_at":30},"mutual-tls","Mutual TLS (mTLS)",{"slug":60,"category":5,"name":61,"updated_at":30},"oauth-scopes","OAuth Scopes",{"slug":63,"category":5,"name":64,"updated_at":30},"openapi-specification","OpenAPI Specification"]