Interview Prep
Tips, frameworks, and practice problems
System Design Cheat Sheets: Quick Reference for Every Key Concept
This is your one-stop quick reference for system design interviews. Every formula, number, pattern, and decision framework you need — condensed into scanna...
Common System Design Interview Questions: Top 20 with Approaches
This is your practical guide to the most frequently asked system design interview questions. For each question, you will find the problem scope, key requir...
Database Cheatsheet: SQL vs NoSQL, Indexing, Sharding, and Replication
Choosing the right database is one of the most consequential decisions in system design. This cheatsheet gives you quick-reference comparisons, decision fr...
Scalability Cheatsheet: Patterns, Numbers, and Formulas for System Design
This cheatsheet is your quick reference for all things scalability. From load estimation formulas to scaling patterns and capacity planning, everything you...
System Design Interview Guide: Framework, Time Management, and Expert Tips
The system design interview is the most impactful round in senior engineering interviews. Unlike coding interviews with clear right answers, system design ...