背景:增量游标 ISO 格式 bug 空转三天才被人工发现 — "success+fetched=0" 无人知晓。 - AlertService:识别企微 webhook(qyapi.weixin.qq.com)→ markdown 格式(级别 emoji/颜色, context 引用块,body 截断);企微 HTTP 永远 200 → 检查 body.errcode 才算送达。 - 增量空转探针(ColdImportService 收尾):带游标的增量跑出 0 写入时,反查 DW 「比游标新的行数」— DW 也 0 = 真没数据(静默);DW>0 = 拉不到但有 → 当天 critical 告警。 探针(ClickHouseSourceService.probeNewRowCounts)任何异常吞掉,绝不影响同步主流程。 - DwLagMonitorService:🟡/🔴 滞后从"只打日志"接到 AlertService(企微同收)。 验证:本地用编译产物真发企微群,payload 被接受(无 errcode 报错)。tsc 0。 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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