REST, WebSocket, and Recovery: A Production Architecture for Live Sports Data

Short summary

A production architecture for live sports data must combine REST snapshots with WebSocket push channels, plus explicit rules for ordering, idempotency, reconciliation, and observability. The article details how to hydrate state from REST before opening streams, normalize provider messages into structured envelopes, handle duplicate delivery idempotently, and implement first-class reconnect and recovery workflows. It also covers correction handling, invariant validation, and ensuring state consistency across dependent views.

• •Use REST for snapshots and WebSocket for change signals; hydrate before streaming to avoid races
• •Normalize provider messages and enforce idempotency so duplicate delivery doesn't double-apply events
• •Recovery is first-class: pause side effects, reconnect, fetch snapshot, reconcile, then resume

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