I've noticed that whenever I turn on logging or switch to verbose logging, the issues I was experiencing either stop occurring or aren't as severe as before. Why does this happen? Is there something about logging that changes how the program operates?
5 Answers
I’ve seen notes saying things like, "Turned on logging. Issue resolved." It's almost like turning on logging forces the system to reset things just enough to fix the problem!
Sometimes, enabling logging can change the timing of operations due to extra delays introduced by writing logs. This might help resolve race conditions or timing issues that were causing problems originally. It’s just a theory from my experience, but it often seems to help!
Yeah, I’ve seen processes magically resolve themselves when I insert a bit of blocking I/O as well. It can be pretty wild!
This phenomenon reminds me of the Heisenbug effect—when you observe a bug, it often behaves differently. Essentially, your act of logging or debugging might just change how the software runs, even if only subtly.
For some folks, having tech problems disappear with logging is a bit like a double-edged sword. It's cool that it works, but also frustrating when the logging itself is the fix!
One possibility is that when logging is turned on, your service has to restart, which might inadvertently fix the underlying issue by refreshing the system state. Sometimes a clean start is all it needs!
Exactly! I’ve had bugs disappear when debugging just for this reason. The debugger adds timing changes that somehow fix the issue.