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perf(go): start realtime projector at latest offset

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lingniu
2026-07-03 08:30:18 +08:00
parent 4c34c1221b
commit 97362e3205
4 changed files with 26 additions and 8 deletions
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docs/architecture/iot-data-platform-principles.md
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@@ -71,7 +71,7 @@ Every received frame should become one `FrameEnvelope`.
1. Stabilize ingress: connection lifecycle, protocol parser correctness, bounded backpressure, durable publish.
2. Stabilize event log: NATS to Kafka bridge, topic names, partition keys, retry and replay.
3. Simplify storage: keep only the minimal tables above, remove duplicated payloads from business tables.
4. Stabilize realtime: Redis full latest raw state, MySQL lightweight snapshot and location.
4. Stabilize realtime: Redis full latest raw state, MySQL lightweight snapshot and location. Realtime consumers start from latest when no committed offset exists; historical rebuilds must be explicit replay jobs, not accidental backlog scans.
5. Stabilize history: raw and location query pagination, clear time zone behavior.
6. Stabilize metrics: idempotent daily metrics from mileage differences and raw replay.
7. Add operations: health, readiness, metrics, lag, connection counts, deploy notes.