Learn to design scalable, reliable systems that handle millions of users. System design interviews test your ability to architect real-world applications, considering tradeoffs, scalability, and best practices.
Core Topics:
Scalability: Load balancing, horizontal vs vertical scaling
Storage: Databases (SQL vs NoSQL), caching (Redis, Memcached)
Reliability: Replication, failover, disaster recovery
Performance: CDNs, caching strategies, database indexing
Common Design Questions:
Design URL shortener (bit.ly)
Design rate limiter
Design Twitter/Instagram feed
Design messaging system (WhatsApp)
Design file storage (Dropbox)
Interview Level: Senior engineers (L5+) at FAANG companies. Requires 3-5+ years experience to tackle effectively.
Preparation: Study system design patterns, understand distributed systems fundamentals, and practice mock interviews.
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4 min read System Design: Load Balancer — How to Design Traffic Distribution at Scale Load balancers are one of the most fundamental Read article
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4 min read Why API Design Matters in Interviews API design questions appear in senior system design interviews: “Design the Twitter API,” “Design Read article
7 min read Why Multi-Region? Single-region deployments have two problems: (1) Latency — a user in Tokyo making a request to a US-East Read article
