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Concept guides/Consistency and money/Payments & ledgers

System designConsistency and money

Payments & ledgers

Hard3 min read

Questions it teaches

Shared expenses for a group of friendsEasy25 min Checkout for an online course storeEasy25 min Loyalty points for a coffee chainEasy30 min Transfers between a member's own accountsEasy25 min Double-entry accounting atomicity and floorsMedium40 min Design a refund serviceMedium40 min 3-D Secure payment reconciliationMedium40 min Trial balance and period closeMedium40 min

Related

Consistency and money Messaging and streams Data modeling and storage Scale and caching Real-time systems Backend internals Reliability and failover

Builds on: Messaging and streams

Designing team chat3 min Real-time personalization4 min

Builds on: Data modeling and storage

Designing a parking lot4 min Designing a pastebin3 min

Related: Scale and caching

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Related: Real-time systems

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