Latest Architecture Patterns Articles

CQRS , or Command Query Responsibility Segregation , is an architectural pattern that separates operations that change application state from operations that read application state.

The Saga pattern is a way to manage a business transaction that spans multiple services without using one distributed database transaction. Instead of locking every participating resource until the entire operation completes, a saga breaks the workflow into a sequence of local transactions.

Running microservices in production requires more than splitting an application into independently deployed services. The architecture introduces network failures, partial availability, distributed data, asynchronous workflows, deployment coordination, and significantly more operational state.

Choosing service boundaries is one of the hardest decisions in a microservices architecture. Services that are too large lose deployment and ownership independence, while services that are too small create excessive network communication, distributed transactions, and operational overhead.

Microservices architecture structures an application as a set of independently deployable services, each responsible for a focused business capability. Instead of deploying users, orders, payments, inventory, and notifications as one application, these capabilities can evolve, scale, and fail indepe