Chapter 1

Microbenchmarks 101

BenchmarkXxx, b.N, and what the output means.

~13 min total2 lessonsAssignment

By the end of this chapter you'll be able to

Write your first benchmark
Read ns/op and allocs/op without lookup

Lessons

Module: The basics

Your first benchmark

A `BenchmarkPluralize` in 10 lines.

Reading the output

ns/op, B/op, allocs/op — what each tells you.

Chapter assignment

Benchmark a hot path

Pick the most-called function in your service (often a serialiser, parser, or auth check). Write a benchmark. Run it 3 times and confirm the numbers are stable. Paste the output in notes.md.

See success criteria

Lesson 1 takes ~7 min.

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ch.2: Profiling with pprof