#2 most askedVery commonMediumScaling basics
How do you scale a web app from 1 to 1 million users?
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🏢 Asked in real interviews
No reports yet. Were you asked this? Be the first to say where.Your app runs on one server with its database. Traffic is growing fast. Walk through how you'd scale it step by step.
🧭 The scaling journey
Users
CDN
Load balancer
App servers ×N
Cache
DB primary + replicas
Queue + workers
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