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net/http/pprof exposes live profiles; go tool pprof visualises them as flame graphs. Profile the real workload before optimising: hot spots are usually allocation, JSON handling or lock contention rather than the code you suspect.
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Runtime · hard
40. Profiling with pprof
CPU, heap, block and goroutine profiles.
1 min read2 questionsup to 50 XPtopic 40/50
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- 1. Read the explanation once end to end, skipping the code.
- 2. Re-read the code snippets and say out loud what each line does.
- 3. Answer the quiz without scrolling back — that is the real check.
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1. Which profile reveals lock contention?
2. Optimisation should start with…
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