CQRS is an architectural pattern that cleanly separates writes (commands) from reads (queries) to boost scalability, performance, and maintainability. The article explains key components (commands/handlers, queries/handlers, domain model, optional event store), outlines implementation steps, shows TypeScript examples, and an e-commerce use case.
Event Sourcing and CQRS offer a modern alternative to CRUD by storing immutable events and separating writes from reads, delivering auditability, consistency, and independent scaling. Combined, they power scalable, flexible systems for complex domains, from banking to e-commerce, like an order workflow that drives inventory, fulfillment, and notifications via events.
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