Saga Pattern: Distributed Transactions Without 2PC
Prerequisite: Familiarity with the concepts introduced in Part 3 — Event Sourcing Cqrs. Review it first if the terminology in this part is unfamiliar. Answer-first: The Saga pattern coordinates distributed transactions across core banking microservices without two-phase commit (2PC). By executing local transactions and defining compensating actions for failures, Sagas ensure eventual consistency across payment and ledger services. Series (Part 4 of 8): This article builds upon Event Sourcing from Part 3. The Saga Pattern solves the problem: “How do we ensure consistency when a transaction must coordinate across multiple microservices without using distributed locks or 2PC?” ...