expertReal System Design Problems

Design a distributed messaging system that guarantees ordered, reliable delivery across regions.

Tests whether you can combine partitioning, replication, and ordering guarantees into one coherent messaging backbone.

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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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