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Welcome back to our System Design Series. If you’ve ever built an application that started small but suddenly gained a surge of traffic, you’ve likely faced the "Scaling Wall." Your server is gasping for air, latency is spiking, and your users are se...

Performance is the efficiency of a single request; Scalability is the system’s ability to maintain that efficiency as volume increases. It is a common mistake to conflate performance and scalability. A server that responds in 10ms is performant. A sy...
