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While this loads — worth knowing
ElastiCache RedisnotElastiCache Memcached
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
Loading…
While this loads — worth knowing
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
Real-world system design
Every one of these grew from a single box to serving the planet, and each broke in its own way on the road there. Read the story stage by stage — what buckled, and the move that fixed it — drawn from the companies’ own engineering talks. Then play it: turn the traffic up yourself and build the architecture from scratch.
Sharded data, and IDs that never collide
How a photo-sharing app grows from one server to hundreds of millions of users — told through Instagram's public engineering talks, in AWS terms.
Read how Instagram scalesHundreds of microservices, on its own CDN
How a streaming service grows from one datacenter to a quarter of a billion viewers — the story of moving video to the edge, told in AWS terms and based on Netflix's public engineering talks.
Read how Netflix scalesReal-time matching, not page views
How a ride-hailing app grows from one city to the whole world — handling a flood of driver locations, matching riders in real time, and pricing on the fly. Based on Uber's public engineering writing, in AWS terms.
Read how Uber scalesFan-out on write — except for the famous
How a timeline grows from thousands of users to hundreds of millions — and why the same feature needs opposite designs for an ordinary user and a celebrity. Based on Twitter's public engineering talks, in AWS terms.
Read how Twitter scalesMillions of live connections, a tiny team
How a messenger grows from thousands of chats to billions of them — where the resource that runs out is not requests per second but millions of connections held open at once. Based on WhatsApp's public engineering talks, in AWS terms.
Read how WhatsApp scalesTurn the traffic up on a real company’s architecture, watch which piece gives way first, and fix it — then build the whole thing from a blank canvas.
Play the scale journeys