Tag: Data & Consistency Management

A Domain Event is an immutable record that something meaningful happened in the business domain, named in the past tense (for example ClaimApproved).

API Composition solves the "no more SQL JOIN" problem that appears once each microservice owns its own database.

Event Sourcing stores every change to a business object as an immutable event in an append-only log, instead of overwriting the current state in a row.

CQRS (Command Query Responsibility Segregation) splits an application's model into two sides.

A saga is a way to complete one business process that spans several services, each with its own database, without a distributed lock or a two-phase commit.

The Shared Database pattern lets several services temporarily read and write the same physical database while their business logic already lives in separate service codebases.