REST and WebSocket Together: How to Build Reliable Live Sports Data Systems

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Building a production-grade live sports interface requires both REST and WebSocket protocols working in tandem, not as alternatives. REST is used to load complete match snapshots at page open and to reconcile state after connection gaps, while WebSocket handles low-latency event delivery for real-time updates. A backend projection layer applies incoming events to a known snapshot, ensuring the stream serves as an input to state rather than the state itself. Idempotent event handling is essential because reconnects and retries can cause duplicate message delivery, which must not result in duplicate goals, cards, or notifications being recorded. Recovery must be treated as a core workflow, involving snapshot re-fetching via REST and state reconciliation whenever a live channel disconnects or a sequence gap is detected.

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Anthropic Eyes $965B IPO as AI Labs Push Self-Regulation and Infrastructure Overhaul

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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