System DesignDatabases
Strong vs Eventual Consistency: Pick Your Trade-off
See the real difference between strong and eventual consistency. Interactive simulator shows how banks and social media make different choices.
8 min read
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System Design
Build systems that handle millions without breaking a sweat
14 posts
System Design
Distributed Systems Fundamentals: Why, What Breaks, and How
Master distributed systems fundamentals. Learn why we distribute, what breaks, core vocabulary, and trade-offs with interactive visualizations.
12 min read
System DesignDatabases
Replication Topologies: Single-Leader, Multi-Leader, Leaderless
Master database replication patterns. Compare single-leader, multi-leader, and leaderless topologies with interactive visualizations and real-world examples.
10 min read
System DesignDatabases
Cascade Failures: How One Service Takes Down Your Entire System
See how one failing service crashes your entire system. Learn the mechanics behind AWS and Facebook outages.
6 min read
System DesignScalability
How Instagram Explore Recommends Content to 2B Users
Learn how Instagram Explore uses ML to recommend content. Understand two-tower models, candidate generation, and real-time ranking.
10 min read
System DesignScalability
How Netflix Deploys to 200M Users Without Downtime
Learn how Netflix deploys code to 200+ million users with zero downtime using blue-green deployment. A deep-dive case study into their deployment architecture.
8 min read
System DesignScalability
How Google Tests Changes on 8.5 Billion Daily Searches
Learn how Google safely deploys to billions of users using canary releases. A deep-dive case study into their progressive rollout strategy.
9 min read
System DesignDatabases
How Discord Stores Trillions of Messages
Learn how Discord stores trillions of messages and why they migrated from MongoDB to Cassandra to ScyllaDB. A deep-dive into their database evolution.
10 min read
System DesignCaching
How Meta Scaled Memcached to 1 Billion Users
Learn how Facebook scaled Memcached to handle 1 billion users with billions of requests per second. A deep-dive into their distributed caching architecture.
10 min read
System DesignDatabases
How MongoDB Works: A Visual Guide to Document Databases
Learn how MongoDB works from first principles. Interactive simulators for document storage, BSON structure, indexing, and the aggregation pipeline.
10 min read
System DesignDatabases
How PostgreSQL Works: Pages, Indexes, MVCC & WAL Explained
See PostgreSQL internals: 8KB pages, B-tree indexes, MVCC concurrency, and WAL durability. Interactive visual guide.
10 min read
System DesignDatabases
Database Sharding: Why Single Databases Fail at Scale
See why single databases fail at scale. Interactive guide to sharding strategies with Python implementation.
10 min read
System DesignDatabases
Database Replication: How Primary-Replica Keeps Data Safe
See why single databases fail. Interactive guide to primary-replica replication with Python implementation.
10 min read
System DesignDatabases
System Design Simulator: Build, Break, and Fix Databases
Interactive SimCity-style simulator where you build and break infrastructure. Add shards, replicas, and watch cascade failures teach you system design.
10 min read