# golang-design/under-the-hood

📚 Go: Under The Hood | Go 语言原本 | https://golang.design/under-the-hood

Repository: https://github.com/golang-design/under-the-hood
Canonical: https://ross.abutalabs.com/products/under-the-hood
Homepage: https://golang.design/under-the-hood
Language: HTML
License: MIT
License Family: permissive
Topics: golang, source-code-study, go
Last push: 2026-08-25T11:59:13+00:00

## Health v2 (maintenance only)
Score: 84/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 55, longevity 100
- inputs: {"age_days": 2906, "days_push": 8, "days_rel": 85, "gap_med": null, "n_releases_24m": 1}
- flags: prerelease_only
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4347, forks 493 (observed 2026-08-28T04:08:46.239584+00:00)

## What it is
An open-source book (in Chinese) that explains the implementation principles and evolution of the Go language by studying its source code, covering the runtime, toolchain, concurrency, memory, and standard library. It is based on Go 1.26 and available online at golang.design/under-the-hood.

## Use cases
- understand how the Go runtime implements goroutines and the scheduler
- learn how Go's garbage collector and memory allocator work internally
- study how the Go compiler and toolchain are implemented
- deepen understanding of Go language design decisions and trade-offs
- prepare for deep Go source code reading
- learn Go internals before a systems interview

## When to choose
- you want a deep, source-code-level explanation of Go's implementation
- you read Chinese and want a comprehensive Go internals book
- you want to understand runtime, compiler, and concurrency internals rather than just syntax

## When to avoid
- you need a beginner tutorial for writing Go applications
- you need English-only material
- you need a quick reference rather than an in-depth book

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, developer-tools
- domain: programming-languages, tutorials, developer-tools
- platform: windows, cross-platform
- tags: go, golang, book, source-code-analysis, runtime, compiler, internals, chinese, linux, macos

## Member repositories
- golang-design/under-the-hood (main) score 84

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:46.239584+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:21:34.063239+00:00, confidence not recorded.
  - readme: https://github.com/golang-design/under-the-hood (fetched 2026-08-28T04:08:46.239584+00:00, sha 9b7988767296)
  - homepage: https://golang.design/under-the-hood (fetched 2026-08-29T09:10:17.506728+00:00, sha 4684b7ba298a)
- Data as of 2026-08-30T08:39:29.467469+00:00.