- Microservices Design Patterns Tutorial
- Microservices Design Patterns - Home
- Microservices Design Patterns - Overview
- Decomposition Design Patterns
- Decompose by Business Capability
- Decompose by Subdomain
- Decompose by Strangler
- Integration Design Patterns
- API Gateway
- Aggregator
- Proxy
- Client Side UI Composition
- Chain Of Responsibilities
- Branch
- Database Design Patterns
- Database per Service
- Shared Database per Service
- Command Query Responsibility Segregator
- Saga
- Aysynchronous Messaging
- Event Sourcing
- Observability Design Patterns
- Log Aggregation
- Performance Metrics
- Distributed Tracing
- Health Check
- Cross Cutting Concern Design Patterns
- External Configuration
- Service Discovery
- Circuit Breaker
- Blue Green Deployment
- Useful Resources
- Quick Guide
- Useful Resources
- Discussion
Microservices Design Patterns - Branch
Problem Statement
Microservice architecture structures an application as a set of loosely coupled microservices and each service can be developed independently in agile manner to enable continous delivery/deployment. Now consider a case where one service needs output of another service as dependency and client can call any service.
Solution
We can use Branch Microservices Design Pattern here. Branch microservice pattern is the extended version of aggregator pattern and chain pattern. In this design pattern, the client can directly communicate with the service. Also, one service can communicate with more than one services at a time. Following is the diagrammatic representation of Branch Microservices.
Advantages
Branch microservice pattern allows the developer to configure service calls dynamically. All service calls will happen in a concurrent manner, which means service A can call Service B and C simultaneously.