Blog & Learning

Master binary search from the basics to advanced variants. Covers templates, pitfalls, and 5 real interview problems.

Learn how a URL shortening service like Bitly works, from high-level architecture to database design, caching, scalability, and API design.

A visual guide to sliding window in DSA. Learn fixed vs variable windows with 4 classic problems and code templates.

A practical guide to cache placement, eviction policies, and consistency patterns in distributed systems.

A breakdown of the metaphor, whiteboard flow, and exercises I used to teach recursion to CSE110 students.

After building several production apps with both routers, here's what I actually think about the migration.