概述
调优可观测性：审计指标基数，配置链路采样，并确认日志结构化且在预算内保留，避免成本失控。本工作流属于可观测性领域，目标是keep observability signal high while controlling cost and cardinality within the configured budget.以下步骤将指导你完成关键操作，并在每一步设置可验证的中间状态，确保最终结果可复现、可审计、可回滚。
步骤详解
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Audit metric cardinality。 Inspect the top series by label and identify high-cardinality labels that should be removed or bucketed.预期状态：Series count drops after removing or bucketing the offending labels.
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Configure trace sampling。 Set tail sampling to keep all error traces and a representative sample of healthy traces within the volume budget.预期状态：Error traces are retained and healthy-trace volume stays within budget.
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Verify structured logs。 Confirm every service emits JSON logs with a correlation id and the retention policy matches the compliance window.预期状态：Logs are structured, correlated, and retained for the required window.
每一步都包含明确的动作与预期状态。执行时请记录实际输出，与预期状态逐一对照。若某一步未达预期，应停下排查而非继续推进，避免问题向后传递放大。
验证与后续
验证方法：keep observability signal high while controlling cost and cardinality within the configured budget.完成后，将本次执行的命令、输出与参数归档，并更新团队运行手册。若用于生产环境，请先在预发环境完整演练一次，并确认团队熟悉回滚路径与应急联系人。本工作流难度级别为高级（advanced），预计耗时约35分钟。该流程已通过结构化校验，步骤与决策点均与英文版本严格一致，可在本地按工作流步骤复现并核对结果。
代码示例
promtool check rules rules/*.yaml