Performance & Reliability

Effective caching can reduce database load by 90% and slash response times from seconds to milliseconds. Learn battle-tested caching strategies using Redis, CDN, and application-level caching—with code examples and decision frameworks.

Memory leaks can bring down even the most carefully architected Node.js applications. Learn how to detect, diagnose, and fix memory leaks using heap snapshots, profiling tools, and APM platforms—with real-world examples and prevention strategies.