Learning

Designing a URL Shortener

System design walkthrough for building a scalable URL shortening service like bit.ly.

TypeScript 'satisfies' Operator Deep Dive

TypeScript Generics Deep Dive

Understanding generic types, constraints, and real-world usage patterns.

Two Sum

Hash map approach for O(n) solution

Trapping Rain Water

Two-pointer space-optimized solution

Twitter Timeline Design

Fan-out approaches, caching strategies, and handling celebrity tweets at scale.