for what it's worth, it also comes in super handy when trying to troubleshoot existing systems. Running a complicated system that has weird latency spikes sometimes at a 60s interval and the config file has like:

  - timeout: 1m
  - expireInterval: 1m
  - updateInterval: 5m
  - etc

The first thing I do is go in and change them all to

  - timeout: 59s
  - expireInterval: 61s
  - updateInterval: 307s
  - etc

and then see what the new "problem interval" is. It's either gone, because the spike was from contention from all 3 jobs running every 5 minutes, or the new problem occurs now at 61s intervals.