Saga Pattern: Distributed Transactions Without 2PC
Series Navigation: This is Part 4 of the Core Banking Systems Architecture Masterclass. ← Previous: Part 3 — Event Sourcing & CQRS | Master Curriculum Hub | Next: Part 5 — ISO 20022 Payment Gateways → | Pillar Hub: Go Microservices Guide Saga Pattern: Distributed Transactions Without 2PC Answer-first: The Saga pattern replaces fragile Two-Phase Commit protocols in distributed banking microservices by orchestrating a sequence of local ACID transactions paired with idempotent compensating routines. Utilizing a deterministic workflow orchestrator like Temporal, core banking platforms guarantee eventual consistency, eliminate distributed lock deadlocks under cross-region network partitions, and enforce semantic isolation via reservation holds under 20,000+ TPS workloads. ...