Six in the morning is a request, not a promise

说明与用途

一个计划在凌晨6点运行的无人值守代理经常因调度器负载而延迟启动。通过记录预定开始时间并测量漂移，团队消除了错误假设并提高了后续流程的可靠性。

问题

Unattended jobs scheduled at a fixed time drift due to scheduler load, causing incorrect assumptions about start times and downstream logic failures.

结果

The job now reliably reports drift, downstream logic no longer misclassifies runs, and stakeholders have realistic expectations about start times.

工作流

• Configure job to record intended start time in the run context.
• Log intended and actual start times together.
• Subtract to compute drift and store it for monitoring.
• Adjust downstream time‑based checks to use a tolerance window rather than a hard boundary.
• Update documentation to state the job runs in the morning, usually within an hour of six.
• Communicate the new expectation to stakeholders.
• Monitor drift over weeks and adjust if necessary.

证据

The intended time is now carried into the run and logged next to the actual time.

来源

The drift is a number we can look at over weeks rather than a feeling.

来源