advancedMessaging & Distributed Systems

What is a distributed lock? How does Redis implement Redlock?

Tests whether you know how to coordinate mutual exclusion across multiple machines, not just within one process.

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Generate a complete, structured system design answer — requirements, capacity estimation, API design, architecture, database choice, scaling, caching, fault tolerance, security, trade-offs, and more, walked through the way a strong senior engineer would in a real interview.

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