System Design Tutorials & Courses

Learn system design the way it is actually asked in interviews — fundamentals first, then full case studies.

• Understanding Latency: A Beginner's Guide to System Design Fundamentals

  Learn what latency is, why it matters, and how it impacts your digital experience. A fundamental concept every system designer must understand.

• System Design Fundamentals: Introduction to Scalable Architecture

  Learn the fundamentals of system design and how to build scalable, reliable systems from the ground up.

• Scalability Patterns: Horizontal vs Vertical Scaling

  Understand the difference between horizontal and vertical scaling, and when to use each approach in your system design.

• Throughput Explained: A Beginner’s Guide to System Design Scale (2026)

  Understand throughput (RPS), why it matters for scaling, and how vertical vs horizontal scaling and load balancers help systems handle massive traffic.

• Load Balancing: Distributing Traffic Across Servers

  Learn about load balancing algorithms and how to distribute incoming requests efficiently across multiple servers.

• Caching Strategies: Improving Performance with Smart Data Storage

  Master caching techniques including cache-aside, write-through, write-behind, and refresh-ahead patterns.

• Database Design: Replication, Sharding, and Consistency

  Learn about database replication strategies, sharding techniques, and how to maintain data consistency in distributed systems.

• Microservices Architecture: Building Distributed Systems

  Explore microservices architecture, service communication patterns, and how to design loosely coupled, independently deployable services.

• Designing a URL Shortener: Complete System Design Case Study

  Put your system design knowledge to practice by designing a URL shortener like bit.ly from scratch, covering all aspects from requirements to implementation.

• Consistent Hashing Explained: A System Design Interview Guide (2026)

  Consistent hashing explained for system design interviews: why modulo hashing fails, how the hash ring and virtual nodes work, and what to say when asked.

• Master-Slave Replication: Database Architecture Explained (2026)

  Master-slave replication explained: read/write splits, replication lag, failover, and when to shard instead. What interviewers really want to hear.

• Social Bookmarking System Design: del.icio.us Case Study (2026)

  A complete social bookmarking system design walkthrough: requirements, capacity math, API, data model, caching, and what breaks at 10M users.