Latest from our blog

Grinding hundreds of LeetCode problems is slow and unreliable. Here is why volume alone does not work, and the approach that replaces it.

When should you choose NoSQL over SQL? Complete guide to NoSQL types (key-value, document, column, graph), use cases, trade-offs, and system design interview answers.

The system design research papers actually worth your time in 2026: what each one teaches, the order to read them in, free links to every paper, and how to turn them into interview answers.

The complete system design interview guide: a 7-step framework, core concepts (scalability, databases, caching, load balancing), common questions, and FAANG interview strategies.

Design a URL shortener (like TinyURL or Bit.ly) step-by-step: requirements, capacity estimation, hash generation, database schema, scaling, and common interview trade-offs.

7 tips to stand out in a system design interview: how to frame answers, communicate trade-offs, ask clarifying questions, and avoid the mistakes interviewers flag.