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feat(go): expose bridge batch pressure metrics

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lingniu
2026-07-03 18:58:37 +08:00
parent 16ee09180c
commit 018015f9de
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docs/ops/go-vehicle-ingest-memory.md
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@@ -406,6 +406,20 @@ vehicle_async_sink_queue_depth{sink}
这些指标是进入带帧率压测前的关键保护栏：如果 `queue_depth` 持续增长或 `enqueue_total{status="timeout"}` 增长，说明入口 publish 队列已成为瓶颈。
### NATS Kafka bridge batch 指标
2026-07-03 已为 NATS -> Kafka bridge 增加 batch pending 和 duration histogram：
```text
vehicle_bridge_batch_pending_messages
vehicle_bridge_batch_pending_kafka_messages
vehicle_bridge_batch_duration_ms_histogram_bucket{status,le}
vehicle_bridge_batch_duration_ms_histogram_count{status}
vehicle_bridge_batch_duration_ms_histogram_sum{status}
```
该耗时覆盖一批 NATS 消息路由到 Kafka、Kafka 同步写入、NATS ack 的完整过程。带帧率压测时，如果 pending 持续非 0 或 duration p99 持续上升，应优先排查 Kafka broker、bridge batch size、NATS ack-pending 和网络。
### Gateway frame duration histogram
2026-07-03 已为 Gateway 帧处理耗时增加 histogram：