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!["Work on going deeper" ❌ That's not helpful feedback. Here's what prep[0] actually tells you: → You missed cache invalidation strategy → Your RTO/RPO wasn't quantified → Strong capacity planning ✓](https://image.pictame.com/img/626411953_17843311572686274_9038472390433899927_n.jpg?hash=aHR0cHM6Ly9zY29udGVudC1wcmcxLTEuY2RuaW5zdGFncmFtLmNvbS92L3Q1MS44Mjc4Ny0xNS82MjY0MTE5NTNfMTc4NDMzMTE1NzI2ODYyNzRfOTAzODQ3MjM5MDQzMzg5OTkyN19uLmpwZz9zdHA9ZHN0LWpwZ19lMTVfZnJfcDEwODB4MTA4MF90dDYmX25jX2h0PXNjb250ZW50LXByZzEtMS5jZG5pbnN0YWdyYW0uY29tJl9uY19jYXQ9MTA2Jl9uY19vYz1RNmNaMmdHelhvTU1GV1ZISGRSeXd3WFNBcC1TQ3dIMGdBcjZ4WmtHMmlLcnFZc2dLX3czeW83b19mN1NDT0VUaTVJX3o2QSZfbmNfb2hjPThmU3NlbkJLbWRnUTdrTnZ3RTA5bUNyJl9uY19naWQ9ZHlnMEFPM2ZXYVdWTzRMemhkVlVCQSZlZG09QVBVODlGQUJBQUFBJmNjYj03LTUmb2g9MDBfQWYwRzlQR0FjMXJ2Z2Y5X3JPdlBEYVo3d2pqZDdXemYtRHYzQ2xCdW9UeVVlZyZvZT02OUVEMEREOCZfbmNfc2lkPWJjMGMyYw==)
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![Let's do the math 🧮 Human mock interview: $99-149 per session Video courses: $50-200 (no personalized feedback) prep[0]: $19.99/month UNLIMITED Practice 24/7. No scheduling. Consistent AI feedback.](https://image.pictame.com/img/626212955_17843311242686274_6018151947111093154_n.jpg?hash=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)
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![🚀 Stop reading. Start practicing. System design interviews are hard. But you don't need to pay $150/hr for mock interviews anymore. prep[0] gives you unlimited AI-powered practice with real FAANG q](https://image.pictame.com/img/626179294_17843310174686274_4533047065814945269_n.jpg?hash=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)
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Prep[0]
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Practice System Design Problems With AI
