Some of the “best” design patterns are silently killing your app’s performance and security.

We love to say “Use a pattern, it will make things cleaner.”
But some patterns are quietly causing performance drops, stale data, and even security leaks — especially Singleton, Strategy, and Decorator.

I published a long-form breakdown of where these patterns shine and where they become production nightmares, including real-world lessons from scaling software.

Full article on Medium:
👉 https://medium.com/@nurrehman/why-your-code-patterns-are-secretly-killing-performance-and-security-349632aae1f9?sk=d6c53573a0e579d782e372cfa833a653

Would love feedback, war stories, and your experience with these patterns in large systems.

softwarearchitecture #designpatterns #security #webdev #programming