177 lines
4.8 KiB
Markdown
177 lines
4.8 KiB
Markdown
# Architecture Overview - Microservices
|
|
|
|
This document serves as a comprehensive guide to the microservices architecture, enabling rapid understanding of service boundaries, communication patterns, and system design.
|
|
|
|
## 1. Project Structure
|
|
|
|
```
|
|
[Project Root]/
|
|
├── services/ # Microservices
|
|
│ ├── api-gateway/ # Entry point for all requests
|
|
│ ├── user-service/ # User management
|
|
│ ├── [service-name]/ # Additional services
|
|
│ └── shared/ # Shared libraries
|
|
├── infrastructure/ # Infrastructure as code
|
|
│ ├── k8s/ # Kubernetes manifests
|
|
│ └── terraform/ # Terraform configs
|
|
├── docs/ # Documentation
|
|
└── scripts/ # DevOps scripts
|
|
```
|
|
|
|
## 2. High-Level System Diagram
|
|
|
|
```
|
|
[API Gateway] <--> [Service Mesh/Load Balancer]
|
|
|
|
|
+-------------------+-------------------+
|
|
| | |
|
|
[Service 1] [Service 2] [Service 3]
|
|
| | |
|
|
[Database 1] [Database 2] [Database 3]
|
|
| |
|
|
+-------------[Message Queue]-----------+
|
|
```
|
|
|
|
## 3. Core Components
|
|
|
|
### 3.1. API Gateway
|
|
|
|
**Name:** [e.g., Kong, AWS API Gateway, Custom Gateway]
|
|
|
|
**Description:** Routes requests, handles authentication, rate limiting, and request aggregation
|
|
|
|
**Technologies:** [e.g., Kong, Express Gateway, Spring Cloud Gateway]
|
|
|
|
**Deployment:** [e.g., Kubernetes, AWS]
|
|
|
|
### 3.2. Microservices
|
|
|
|
#### 3.2.1. [Service Name]
|
|
|
|
**Name:** [e.g., User Service, Order Service]
|
|
|
|
**Description:** [Service responsibility and domain]
|
|
|
|
**Technologies:** [Language and framework]
|
|
|
|
**API Endpoints:** [Key endpoints this service exposes]
|
|
|
|
**Dependencies:** [Other services it calls]
|
|
|
|
**Database:** [Dedicated database if any]
|
|
|
|
**Deployment:** [Container registry, orchestration]
|
|
|
|
### 3.3. Service Mesh
|
|
|
|
**Name:** [e.g., Istio, Linkerd, Consul]
|
|
|
|
**Description:** Handles service-to-service communication, observability, and security
|
|
|
|
**Key Features:** [Traffic management, circuit breaking, etc.]
|
|
|
|
## 4. Data Stores
|
|
|
|
### 4.1. Service-Specific Databases
|
|
|
|
Each microservice has its own database following the database-per-service pattern.
|
|
|
|
#### [Service Name] Database
|
|
|
|
**Type:** [PostgreSQL, MongoDB, etc.]
|
|
|
|
**Purpose:** [Data domain this service owns]
|
|
|
|
**Key Schemas:** [Main tables/collections]
|
|
|
|
### 4.2. Shared Data Stores
|
|
|
|
**Name:** [e.g., Redis Cache, Message Queue]
|
|
|
|
**Type:** [Redis, RabbitMQ, Kafka]
|
|
|
|
**Purpose:** [Cross-service caching or messaging]
|
|
|
|
## 5. External Integrations / APIs
|
|
|
|
**Service Name:** [e.g., Payment Gateway, Email Service]
|
|
|
|
**Purpose:** [Functionality]
|
|
|
|
**Integration Method:** [REST, gRPC, Message Queue]
|
|
|
|
**Owning Service:** [Which microservice handles this integration]
|
|
|
|
## 6. Deployment & Infrastructure
|
|
|
|
**Cloud Provider:** [AWS, GCP, Azure]
|
|
|
|
**Orchestration:** [Kubernetes, Docker Swarm, ECS]
|
|
|
|
**Service Discovery:** [Consul, Eureka, Kubernetes DNS]
|
|
|
|
**CI/CD Pipeline:** [Jenkins, GitLab CI, GitHub Actions]
|
|
|
|
**Container Registry:** [Docker Hub, ECR, GCR]
|
|
|
|
**Monitoring & Logging:** [Prometheus, Grafana, ELK, Jaeger for tracing]
|
|
|
|
**Configuration Management:** [Consul, etcd, ConfigMap]
|
|
|
|
## 7. Security Considerations
|
|
|
|
**Authentication:** [OAuth2, JWT at API Gateway]
|
|
|
|
**Authorization:** [Service-level RBAC, mutual TLS]
|
|
|
|
**Service-to-Service Security:** [mTLS, API keys, service mesh policies]
|
|
|
|
**Data Encryption:** [TLS in transit, encrypted at rest]
|
|
|
|
**Secrets Management:** [Vault, AWS Secrets Manager, Kubernetes Secrets]
|
|
|
|
## 8. Development & Testing Environment
|
|
|
|
**Local Setup Instructions:** [Docker Compose, Minikube, or Skaffold]
|
|
|
|
**Testing Strategy:**
|
|
- Unit Tests: [Per service]
|
|
- Integration Tests: [Between services]
|
|
- Contract Tests: [API contracts]
|
|
- E2E Tests: [Full system tests]
|
|
|
|
**Testing Frameworks:** [Service-specific frameworks]
|
|
|
|
## 9. Future Considerations / Roadmap
|
|
|
|
- [e.g., Implement event sourcing for specific services]
|
|
- [e.g., Add service mesh for better observability]
|
|
- [e.g., Break down Service X into smaller services]
|
|
- [e.g., Implement CQRS pattern]
|
|
|
|
## 10. Project Identification
|
|
|
|
**Project Name:** [Microservices System Name]
|
|
|
|
**Repository URL:** [Monorepo or organization URL]
|
|
|
|
**Primary Contact/Team:** [Platform Team]
|
|
|
|
**Date of Last Update:** [YYYY-MM-DD]
|
|
|
|
**Service Catalog:** [Link to service registry/documentation]
|
|
|
|
## 11. Glossary / Acronyms
|
|
|
|
**API Gateway:** Entry point for all external requests
|
|
|
|
**Service Mesh:** Infrastructure layer for service-to-service communication
|
|
|
|
**Circuit Breaker:** Pattern to prevent cascading failures
|
|
|
|
**CQRS:** Command Query Responsibility Segregation
|
|
|
|
**Event Sourcing:** Storing state changes as events
|
|
|
|
**[Add domain-specific terms]**
|