advancedTrading & Settlement Systems59 of 132

Design a trade settlement system that reconciles trades across multiple exchanges

Tests whether you treat each exchange feed as an independent source of truth reconciled via matching keys and tolerance windows, rather than assuming all exchanges report trades in the same format or timing.

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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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