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Week 3: Context, I/O & JSON (Days 15–21)

8 chapters · 15 min of reading

Phase: 1 — Go Fundamentals Goal: Master the three packages in literally every production Go service: context, io, and encoding/json. These are the building blocks of your HTTP middleware chain.


Contents

8 chapters, one page each. Prefer one long page? Read the whole book on one page.

  1. Day 15 — context Package2 min
  2. Day 16 — io.Reader & io.Writer2 min
  3. Day 17 — encoding/json2 min
  4. Day 18 — File I/O & os Package2 min
  5. Day 19 — Strings & Bytes2 min
  6. Day 20 — regexp2 min
  7. Day 21 — time Package2 min
  8. Week 3 Mini Project: Structured Request Logger Middleware2 min

Generated from week3.md · 8 Oct 2026 16:36