Clean Code & Best Practices

Practical guides on writing readable, maintainable code, refactoring, code reviews, testing strategies, and developer discipline.

LRU Cache Implementation from Scratch: Full Code Walkthrough

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A detailed guide to implementing an LRU cache from scratch using a doubly linked list and hash map. We walk through the code, explain design trade-offs, and show real-world use cases.

Common Mistakes in Implementing a Stack from Scratch

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A stack of plates representing a stack data structure

Implementing a stack from scratch seems straightforward, but many developers fall into common traps. From confusing array and linked list trade-offs to mishandling capacity and thread safety, this post covers the pitfalls you need to avoid.