Note

https://stackoverflow.com/questions/6631280/what-is-the-difference-between-a-validation-rule-and-a-business-rule

Strangler pattern

• Brown Field and Green Field Projects

Sidecar pattern

Service Mesh

Database per service

• Private tables
• Schemas
• Servers

Shared Database

CQRS

Data Consistency

• Strong
• Eventual

Event Driven Architecture

Introduction

Decomposition Pattern