aj-geddes/useful-ai-prompts

memory-leak-detection

Detect and fix memory leaks using heap snapshots, memory profiling, and leak detection tools.

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使用方法

  1. 复制安装命令,在自己的智能体环境安装前先检查源码包。
  2. 从原始文档核对所需工具、凭据和支持的宿主。
  3. 说明输入材料与期望交付物,并对照来源检查输出。
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill memory-leak-detection

开始前需了解

  • 安装不包含模型订阅、API 额度或访问文件的权限。
  • 仓库星数和安装量反映活跃情况,不等于独立质量或安全测试。
仓库原始内容

按源仓库内容呈现,保留标题、案例、代码、表格、链接以及原文引用的演示图片。

Memory Leak Detection

Table of Contents

Overview

Identify and fix memory leaks to prevent out-of-memory crashes and optimize application performance.

When to Use

  • Memory usage growing over time
  • Out of memory (OOM) errors
  • Performance degradation
  • Container restarts
  • High memory consumption

Quick Start

Minimal working example:

typescript
import v8 from "v8";
import fs from "fs";

class MemoryProfiler {
  takeSnapshot(filename: string): void {
    const snapshot = v8.writeHeapSnapshot(filename);
    console.log(`Heap snapshot saved to ${snapshot}`);
  }

  getMemoryUsage(): NodeJS.MemoryUsage {
    return process.memoryUsage();
  }

  formatMemory(bytes: number): string {
    return `${(bytes / 1024 / 1024).toFixed(2)} MB`;
  }

  printMemoryUsage(): void {
    const usage = this.getMemoryUsage();

    console.log("Memory Usage:");
    console.log(`  RSS: ${this.formatMemory(usage.rss)}`);
    console.log(`  Heap Total: ${this.formatMemory(usage.heapTotal)}`);
    console.log(`  Heap Used: ${this.formatMemory(usage.heapUsed)}`);
    console.log(`  External: ${this.formatMemory(usage.external)}`);
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

GuideContents
Node.js Heap SnapshotsNode.js Heap Snapshots
Memory Leak Detection MiddlewareMemory Leak Detection Middleware
Common Memory Leak PatternsCommon Memory Leak Patterns
Python Memory ProfilingPython Memory Profiling
WeakMap/WeakRef for CacheWeakMap/WeakRef for Cache
Memory Monitoring in ProductionMemory Monitoring in Production

Best Practices

✅ DO

  • Remove event listeners when done
  • Clear timers and intervals
  • Use WeakMap/WeakRef for caches
  • Limit cache sizes
  • Monitor memory in production
  • Profile regularly
  • Clean up after tests

❌ DON'T

  • Create circular references
  • Hold references to large objects unnecessarily
  • Forget to clean up resources
  • Ignore memory growth
  • Skip WeakMap for object caches
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