⏱ 6 min read Elasticsearch powers search at Wikipedia, GitHub, Stack Overflow, and Netflix, handling billions of documents with sub-second query latency. While our Read article

⏱ 6 min read Twitch handles millions of concurrent live streams watched by 30+ million daily active users. Designing a live streaming platform tests Read article

⏱ 8 min read TL;DR — Design Discord as a real-time, event-driven system: persistent WebSocket “gateway” connections fan out text messages, presence, and typing events Read article

⏱ 9 min read TL;DR — Build live audio rooms on WebRTC: each speaker publishes audio to a Selective Forwarding Unit (SFU) that routes streams Read article

⏱ 6 min read Stripe processes hundreds of billions of dollars annually for millions of merchants, handling the full payment lifecycle from card tokenization Read article

⏱ 6 min read Notion is a collaborative workspace that combines documents, databases, wikis, and project management in a single tool. With 30+ million Read article

⏱ 6 min read Figma is a browser-based collaborative design tool used by millions of designers, serving as a real-time multiplayer editor for vector Read article

⏱ 6 min read IoT platforms manage millions of connected devices — sensors, cameras, industrial equipment, smart home devices — collecting telemetry data and Read article

⏱ 6 min read DoorDash processes millions of food delivery orders daily, coordinating three parties: customers, restaurants, and drivers (Dashers). Designing a food delivery Read article

⏱ 6 min read Google Calendar manages billions of events for hundreds of millions of users with complex scheduling requirements: recurring events with exceptions, Read article