[System Design] Banking Microservices Architecture: Event Sourcing, CQRS & Saga Patterns for Core Banking (opens in new tab)

Series context (Part 4 of 8): This article assumes familiarity with . Understanding why consistency guarantees are hard at the database layer is essential context before introducing distributed patterns here. Why Microservices in Banking? Microservices in banking is the architectural pattern where a core banking system is broken into independently deployable, domain-owned services (CIF, Payments, Lending, Notifications) connected by an event bus instead of direct database calls. This replaces...