Intermediate12 min readSystem Architecture
Microservices
Decomposing massive applications into independent, database-owning modular service APIs.
What you'll learn
- Monolith
- Database per Service
TL;DR
Decomposing massive applications into independent, database-owning modular service APIs.
Concept Overview
The Microservices design pattern decomposes a massive monolithic backend application into a collection of small, independent, and loosely coupled services that are organized around specific business domains and communicate via lightweight APIs.
Key Architectural Pillars
1
Monolith
A single, unified codebase hosting all business modules. Simple to build early, but scales poorly as teams grow.
2
Database per Service
A microservice must strictly own and query its own database; cross-service database JOINs are strictly forbidden.