一套从生产代码中提取的、可验证的编程模式参考，每个模式附带交互式可视化、精确到行的源码链接和多语言实现。

https://github.com/Totoro-jam/battle-tested-patterns…

Battle-Tested Patterns 从 React、Linux 内核、Go、Redis、PostgreSQL、Chromium 等真实项目中提取了 46 个编程模式，分数据结构、并发、系统设计、内存管理和行为五大类。每个模式都配了交互可视化、精确到行号的源码链接（不是目录，是具体某一行）、四种语言（TypeScript、Python、Go、Rust）的代码实现和可运行的练习。站点中英文双语，支持搜索和分类浏览。

Totoro-jam/battle-tested-patterns

Source: https://github.com/Totoro-jam/battle-tested-patterns

46 Patterns at a Glance

The Gap This Fills

This project: code-level techniques from React, Linux, Go, Chromium — each with verifiable source links.

Patterns

Every “Proven In” link goes to the exact lines in the source code. Not a directory. Not a file. The lines.

What a Pattern Looks Like

Each pattern follows a consistent structure — here’s a taste from Bitmask:

  Bit position:   7    6    5    4    3    2    1    0
                ┌────┬────┬────┬────┬────┬────┬────┬────┐
  Flags:        │    │    │    │ SN │ CB │ RF │ UP │ PL │
                └────┴────┴────┴──┬─┴──┬─┴──┬─┴──┬─┴──┬─┘
                                  │    │    │    │    └── Placement  (1 << 0)
                                  │    │    │    └─────── Update     (1 << 1)
                                  │    │    └──────────── Ref        (1 << 2)
                                  │    └───────────────── Callback   (1 << 3)
                                  └────────────────────── Snapshot   (1 << 4)

Implementations in 4 languages, each idiomatic:

// TypeScript                          // Python
const READ  = 1 << 0;                  READ  = 1 << 0
const WRITE = 1 << 1;                  WRITE = 1 << 1
const perms = READ | WRITE;            perms = READ | WRITE
(perms & READ) !== 0;  // true         bool(perms & READ)  # True

Then exercises at 2 difficulty levels — all with tests you can run.

What’s Inside

Quick Start

Prerequisites

git clone https://github.com/Totoro-jam/battle-tested-patterns.git
cd battle-tested-patterns && pnpm install

# Run exercises in any language
pnpm test:exercises               # TypeScript (491 tests, Vitest)
cd exercises/rust && cargo test   # Rust (173 tests)
cd exercises/go && go test ./...  # Go (176 tests)
cd exercises/python && pytest     # Python (233 tests)

pnpm test                         # Run ALL tests (exercises + docs components)

pnpm dev                          # Local docs site

See the Exercise Guide for detailed setup instructions per language.

Contributing

See CONTRIBUTING.md. The bar is intentionally high:

1. ≥ 2 production proofs with verified, line-number-precise source links
2. TypeScript + ≥ 1 other language — idiomatic, not translated
3. Exercise files in all 4 languages (TS/Rust/Go/Python) + answer files
4. Chinese translation with identical code blocks
5. All tests pass (pnpm test · cargo test · go test ./... · pytest), no lint errors
6. Source links checked weekly by CI — broken links auto-open an Issue

Contributors

Totoro-jam 💻 📖 🎨 🚧 🤔

This project follows the all-contributors specification. Contributions of any kind welcome!

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License

MIT © Totoro-jam