https://github.com/lamngockhuong/memory-leak

Memory leak demo & solutions
https://github.com/lamngockhuong/memory-leak

demo-app memory-leak nestjs nodejs

Last synced: about 2 months ago
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Memory leak demo & solutions

• Host: GitHub
• URL: https://github.com/lamngockhuong/memory-leak
• Owner: lamngockhuong
• License: mit
• Created: 2025-05-18T22:31:12.000Z (5 months ago)
• Default Branch: main
• Last Pushed: 2025-08-26T23:49:59.000Z (about 2 months ago)
• Last Synced: 2025-08-27T08:23:39.150Z (about 2 months ago)
• Topics: demo-app, memory-leak, nestjs, nodejs
• Language: TypeScript
• Homepage: http://memory-leak.khuong.dev/
• Size: 229 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 12
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# Memory Leak Guide

[![Documentation](https://img.shields.io/badge/docs-live-brightgreen)](https://memory-leak.khuong.dev/)

[![Language](https://img.shields.io/badge/languages-JS%20%7C%20TS%20%7C%20Java%20%7C%20Go%20%7C%20Kotlin-blue)]()

[![License](https://img.shields.io/badge/license-MIT-green)](./LICENSE)

A comprehensive guide and demo project to understand, detect, and prevent memory leaks across multiple programming languages.

## 🎯 Overview

This project provides:

- **📚 Comprehensive documentation** on memory leak patterns and prevention

- **🛠️ Hands-on demo applications** in JavaScript/TypeScript, Java, Kotlin, and Go

- **🔧 Real-world tools and utilities** for memory leak detection

- **📊 Best practices** for production monitoring and prevention

## 🌐 Documentation

Visit our comprehensive guide: **[https://memory-leak.khuong.dev/](https://memory-leak.khuong.dev/)**

Available in:

- 🇺🇸 [English](https://memory-leak.khuong.dev/)

- 🇻🇳 [Tiếng Việt](https://memory-leak.khuong.dev/vi/)

## 🚀 Quick Start

### JavaScript/TypeScript (Node.js)

```bash

cd nodejs/nestjs-demo

pnpm install

HEAPDUMP_ENABLED=1 pnpm run start:dev

# Trigger a memory leak

curl -X POST http://localhost:3000/global-variable-leak

```

### Java (Coming Soon)

```bash

cd java/demo

./gradlew run

```

### Go (Coming Soon)

```bash

cd go/demo

go run main.go

```

### Kotlin (Coming Soon)

```bash

cd kotlin/demo

./gradlew run

```

## 📁 Project Structure

```

memory-leak/

├── docs/                    # Documentation website (VitePress)

│   ├── .vitepress/         # VitePress configuration

│   ├── introduction/       # Basic concepts

│   ├── patterns/           # Common leak patterns

│   ├── languages/          # Language-specific guides

│   ├── tools/              # Detection and analysis tools

│   ├── demos/              # Demo project documentation

│   └── vi/                 # Vietnamese documentation

├── nodejs/                  # Node.js/TypeScript demos

│   └── nestjs-demo/        # NestJS application with leak examples

│       ├── src/utils/      # Memory leak utilities

│       │   ├── leak-global.ts      # Global variable leaks

│       │   ├── leak-closure.ts     # Closure leaks

│       │   ├── leak-event.ts       # Event listener leaks

│       │   ├── leak-timer.ts       # Timer leaks

│       │   ├── leak-cache.ts       # Cache leaks

│       │   └── heapdump.ts         # Heap dump utilities

│       └── test/bruno/     # API test collections

├── java/                   # Java demo applications (planned)

├── kotlin/                 # Kotlin demo applications (planned)

├── go/                     # Go demo applications (planned)

└── README.md

```

## 💡 What You'll Learn

### Memory Leak Patterns

- **Global Variables** - Variables that accumulate data without bounds

- **Event Listeners** - Unremoved listeners preventing garbage collection

- **Closures** - Functions capturing large contexts unintentionally

- **Timers & Intervals** - Periodic tasks that never clean up

- **Caching** - Caches that grow without limits

- **DOM References** - Detached DOM nodes still referenced in JavaScript

### Detection Techniques

- **Heap Dump Analysis** - Taking and analyzing memory snapshots

- **Profiling Tools** - Using browser DevTools and Node.js profilers

- **Memory Monitoring** - Setting up production monitoring

- **Automated Testing** - Writing tests to catch memory leaks

### Language-Specific Guides

- **JavaScript/TypeScript** - Browser and Node.js environments

- **Java** - JVM memory management and tools

- **Kotlin** - Both JVM and Native considerations

- **Go** - Goroutines and garbage collection

## 🤝 Contributing

We welcome contributions! Whether it's:

- 📝 Improving documentation

- 🐛 Fixing bugs in demo applications

- 💡 Adding new memory leak patterns

- 🌐 Translating content

- 🛠️ Adding support for new languages

Please see our [Contributing Guidelines](CONTRIBUTING.md) for details.

## 📄 License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.