advancedPayments & Ledger Systems63 of 132
Design a payments ledger that has to stay auditable for years
Tests whether you design the ledger as append-only double-entry bookkeeping with no destructive updates, so every balance is always derivable and verifiable from the full transaction history.
Ready to design this system end to end?
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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