System Design AI

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Start with a template. Work through each step. Ask Coach when you need a second opinion.

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63. Design Real-Time Updates for Millions of Clients
Every goal on 25 million open apps within two seconds: SSE or WebSockets, pub/sub to the right server, resume by seq, hot topics, reconnect storms and push.
ClassicMedium
Queues AWS Publish / subscribe
+4
Push notifications Real time Server sent events WebSockets
Worked design
Practice

Self-paced by default. Your answers and canvas stay private. AI feedback runs only when you ask for it.