Microservices Architecture - Part 1: Foundation & Service Design

In this first part, we’ll establish the foundational concepts and architecture patterns for building scalable microservices.

What We’ll Cover

• Understanding monolithic vs microservices architecture
• Service decomposition strategies
• API design patterns (REST, gRPC)
• Service communication patterns

Key Concepts

1. Service Decomposition

Breaking down a monolithic application into smaller, manageable services:

// Example: User Service Interface
type UserService interface {
    GetUser(ctx context.Context, id string) (*User, error)
    CreateUser(ctx context.Context, user *User) (*User, error)
    UpdateUser(ctx context.Context, user *User) (*User, error)
}

2. Communication Patterns

Choose between synchronous (REST, gRPC) and asynchronous (message queues) communication based on your needs.

Next Steps

In Part 2, we’ll implement service discovery and handle inter-service communication patterns.