Last Updated: November 21, 2025
Microservices
Microservices architecture patterns
Core Principles
- Single Responsibility: Each service does one thing well
- Loose Coupling: Services are independent
- High Cohesion: Related functionality together
- Autonomous: Can be deployed independently
- Decentralized: No central orchestration
- Fault Tolerant: Handle failures gracefully
Communication Patterns
| Item | Description |
|---|---|
Synchronous (REST)
|
HTTP requests, immediate response |
Asynchronous (Messages)
|
Event-driven, queues |
Service Mesh
|
Infrastructure layer for service-to-service |
API Gateway
|
Single entry point for clients |
gRPC
|
High-performance RPC framework |
Design Patterns
| Item | Description |
|---|---|
API Gateway
|
Single entry point |
Service Discovery
|
Find service instances |
Circuit Breaker
|
Prevent cascade failures |
CQRS
|
Separate read and write models |
Event Sourcing
|
Store state changes as events |
Saga Pattern
|
Distributed transactions |
Challenges
- Data consistency across services
- Distributed tracing and debugging
- Service discovery and load balancing
- Network latency and failures
- Testing distributed systems
- Deployment complexity
💡 Pro Tips
Quick Reference
Design scalable distributed systems