Learn real System Design by taking one server and breaking it on purpose, over and over again. Every time it fails, fix the exact bottleneck, so you learn why each architectural layer exists, when to add it, and what it costs. 👉 Join my AI Engineer Course: https://jsm.dev/architect-ai ➤ Links not working? Some regions may need a VPN. https://discord.com/invite/n6EdbFJ https://twitter.com/jsmasterypro https://instagram.com/javascriptmastery https://linkedin.com/company/javascriptmastery Business Inquiries: contact@jsmastery.pro Timestamps: 00:00 — Introduction 01:39 — Starting System 02:20 — Load Balancing 07:52 — Stateless Servers 12:22 — Connection Pooling & Read Replicas 20:31 — Caching 25:09 — Queues & Background Jobs 30:03 — Sharding 35:52 — Closing