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If you were tasked with developing a demand forecasting model for a ride-sharing service, what approach would you take? What data sources and factors would you consider, and how would you ensure the model's accuracy?

Design a distributed cache system.

Design a system for managing a distributed backup and recovery system.

Can you code a fair dice roll using a random number generator and demonstrate its fairness?

Design a system for real-time processing of mobile app analytics.

Design a system for real-time monitoring of cloud infrastructure.

What would a Python function look like that multiplies song streams by a markdown factor?

Can you construct a text-wrapping function that breaks a long string into space-separated lines under a character cap?

How does Support Vector Machine classify data?

Do you have experience building KNN classifiers independently?