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feat(go): expose stat writer latency histogram

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lingniu
2026-07-03 19:08:49 +08:00
parent 3900144ea4
commit 07d17e5adf
6 changed files with 41 additions and 1 deletions
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docs/ops/vehicle-ingest-runbook.md
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@@ -131,6 +131,7 @@ go run ./cmd/load-sim \
| `vehicle_bridge_batch_duration_ms_histogram_bucket` | p99 连续 5 分钟上升 | Kafka 写入或 NATS ack 开始变慢，通常会先于 ack-pending 扩大。 |
| `vehicle_realtime_store_update_duration_ms_histogram_bucket{store="redis"}` | p99 连续 5 分钟上升 | Redis 实时投影变慢，会直接影响 realtime consumer 追平能力。 |
| `vehicle_realtime_store_update_duration_ms_histogram_bucket{store="mysql"}` | p99 连续 5 分钟上升 | MySQL 当前态/位置投影变慢，需结合 async queue depth 和 dropped 计数判断。 |
| `vehicle_stat_write_duration_ms_histogram_bucket` | p99 连续 5 分钟上升 | MySQL 每日里程统计写入变慢，可能导致 stat Kafka lag 增长。 |
| Kafka lag | 连续 5 分钟增长或 `> 10000` | 下游 consumer 或存储存在瓶颈。 |
| Writer 成功计数 | 入口增长但 writer 不增长 | bridge、Kafka、consumer 或存储链路断开。 |