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Real-time systemsHardSDE-3

Your trading app pushes live price ticks over WebSockets. Some clients on poor mobile networks can't keep up, and gateway memory keeps growing until servers crash. How do you fix it?

Asked at
Goldman SachsGrowwZerodha

Think first

Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

Go deeper

Design a stock trading platform (Zerodha Kite) Lesson: Concurrency, backpressure and load shedding

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