7 min read Low-Level Design: Tic-Tac-Toe Game Tic-Tac-Toe is a common LLD warm-up question that tests your ability to model game state, validate […] Read article
8 min read System Design Interview: Design YouTube / Video Streaming Platform Designing YouTube is one of the most comprehensive system design problems […] Read article
7 min read System Design Interview: Design Instagram / Photo Sharing Platform Designing Instagram tests your knowledge of media storage, feed generation, CDN […] Read article
9 min read System Design Interview: Design a Distributed Messaging System (Apache Kafka) Understanding distributed messaging systems is essential for senior engineering roles. […] Read article
8 min read String Manipulation Interview Patterns: Complete Guide (2025) String problems are ubiquitous in coding interviews — from anagram detection to complex […] Read article
9 min read System Design Interview: Design a Distributed File System (HDFS/GFS) Distributed file systems are foundational infrastructure, powering big data processing, cloud […] Read article
9 min read System Design Interview: Design Dropbox / Google Drive (Cloud File Storage) Cloud file storage like Dropbox or Google Drive is […] Read article
9 min read System Design Interview: Design a Hotel Booking System (Airbnb/Booking.com) Hotel booking systems are canonical system design problems testing inventory management, […] Read article
9 min read System Design Interview: Design a Payment System (Stripe/PayPal) Payment system design is one of the most important system design interviews, […] Read article
6 min read Elevator System Low-Level Design Designing an elevator system is a classic low-level design (LLD) interview question asked at companies like […] Read article