System design for Beginners

Every System Design Concept You Need, in One Diagram

The 12 building blocks behind almost every big app, explained for beginners on one diagram that grows as the app does: DNS, load balancers, stateless servers, databases and indexes, caches, replication and failover, sharding, message queues, object storage, CDNs and monitoring. Every one is run on a real machine and measured, not just drawn.