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site11/docs/PLAN.md
2025-09-28 20:41:57 +09:00

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Microservices Architecture Implementation Plan

Project Overview

Build a microservices-based platform with a central Console service acting as an orchestrator and API Gateway, managing multiple domain-specific services.

Architecture Decision

Selected Pattern: API Gateway Pattern with Console as the central orchestrator

  • Console handles authentication, routing, and monitoring
  • Each microservice focuses on domain-specific logic
  • Services communicate via REST APIs and Redis pub/sub

Progressive Implementation Strategy

Step-by-Step Approach

큰 그림을 먼저 구성하고, 핵심 기능부터 점진적으로 확장하는 전략

Implementation Phases

Step 1: Minimal Foundation (Day 1-2)

목표: 가장 기본적인 구조 확립

site11/
├── docker-compose.yml     # 최소 구성 (Console만)
├── console/
│   └── backend/
│       └── main.py        # Hello World API
└── README.md

Tasks:

  • 간단한 docker-compose.yml 생성
  • Console FastAPI "Hello World"
  • 기본 health check endpoint
  • Docker로 실행 확인

Step 2: Add First Service (Day 3-4)

목표: Console과 하나의 서비스 연결

site11/
├── docker-compose.yml
├── console/
│   └── backend/
│       └── main.py        # Gateway 역할 추가
└── services/
    └── users/
        └── backend/
            └── main.py    # Users 서비스

Tasks:

  • Users 서비스 생성
  • Console에서 Users로 라우팅
  • 서비스 간 통신 테스트
  • 간단한 CRUD API

Step 3: Database Integration (Day 5-6)

목표: MongoDB 연결 및 기본 데이터 저장

Tasks:

  • MongoDB 컨테이너 추가
  • Console과 Users 서비스 DB 연결
  • 기본 데이터 모델 생성
  • 실제 데이터 CRUD 테스트

Step 4: Frontend Skeleton (Week 2)

목표: 최소한의 UI 구성

Tasks:

  • Console Frontend 생성 (React + Vite)
  • 기본 레이아웃
  • 서비스 상태 표시
  • Nginx 설정

Step 5: Authentication Basic (Week 2)

목표: 간단한 인증 시스템

Tasks:

  • JWT 토큰 생성
  • Login endpoint
  • Token 검증 미들웨어
  • Protected routes

Step 6: Second Service (Week 3)

목표: 두 번째 서비스 추가로 패턴 확립

Tasks:

  • OAuth 또는 Images 서비스 추가
  • Console 라우팅 확장
  • 서비스 간 통신 패턴 확립
  • Service registry 기초

Step 7: Service Communication (Week 3)

목표: 서비스 간 통신 패턴 구현

Tasks:

  • Redis pub/sub 설정
  • Event 기반 통신 예제
  • Service discovery 구현
  • Health check 자동화

Step 8: Gradual Service Addition (Week 4-5)

목표: 나머지 서비스 점진적 추가

각 서비스별로:

  • 기본 구조 생성
  • Console 연결
  • 핵심 API 구현
  • Frontend 컴포넌트 추가

현재 시작점 (NOW)

즉시 시작할 수 있는 첫 걸음

1. 최소 Docker 환경 구성

# 실행 명령
docker-compose up -d console
curl http://localhost:8000/health

2. Console 서비스만으로 시작

  • Health endpoint
  • 간단한 API Gateway 구조
  • 서비스 등록 준비

3. 하나씩 추가하며 테스트

  • Users 서비스 하나만 추가
  • 통신 확인
  • 패턴 확립 후 확장

핵심 원칙

  1. 작동하는 코드 우선 - 완벽한 설계보다 동작하는 MVP
  2. 점진적 복잡도 - 간단한 것부터 시작해서 기능 추가
  3. 빠른 피드백 - 각 단계마다 실행하고 확인
  4. 패턴 확립 - 첫 서비스로 패턴을 만들고 복제

상세 구현 계획 (참고용)

Phase 1: Foundation Setup (Week 1)

Goals

  • Set up project structure
  • Configure Docker environment
  • Establish basic infrastructure

Tasks

  • Initialize Git repository
  • Create Docker Compose configuration
  • Set up Nginx reverse proxy
  • Configure MongoDB and Redis containers
  • Create base directory structure for all services

Deliverables

  • Working Docker environment
  • Basic networking between containers
  • Database and cache ready

Phase 2: Console Service - Core (Week 2)

Goals

  • Implement Console as API Gateway
  • Set up authentication system
  • Create service registry

Tasks

  • Console Backend
    • FastAPI application setup
    • JWT authentication implementation
    • Service registry and discovery
    • API routing mechanism
    • Health check endpoints
  • Console Frontend
    • React + Vite setup
    • Login/Register pages
    • Admin dashboard layout
    • Service status dashboard

Deliverables

  • Working authentication system
  • Basic API Gateway functionality
  • Service health monitoring dashboard

Phase 3: OAuth Service (Week 3)

Goals

  • Centralized authentication service
  • OAuth2 implementation
  • User session management

Tasks

  • OAuth Backend
    • OAuth2 server implementation
    • Token generation and validation
    • User authentication endpoints
    • Integration with Console
  • OAuth Frontend
    • OAuth consent screens
    • Token management UI
    • Application registration

Deliverables

  • OAuth2 server
  • Token-based authentication
  • Integration with Console

Phase 4: Users Service (Week 4)

Goals

  • User management microservice
  • Profile management
  • User data CRUD operations

Tasks

  • Users Backend
    • User model and database schema
    • CRUD APIs for user management
    • Profile management endpoints
    • Integration with OAuth service
  • Users Frontend
    • User list and search
    • Profile editing interface
    • User details view

Deliverables

  • Complete user management system
  • Profile management features
  • Admin user interface

Phase 5: Core Microservices (Weeks 5-6)

Goals

  • Implement remaining core services
  • Establish inter-service communication

Services to Implement

  1. Images Service

    • Image upload/download
    • Image processing
    • Storage management
  2. Applications Service

    • Application registration
    • Configuration management
    • Version control
  3. Data Service

    • Data import/export
    • Data transformation
    • API for data access
  4. Statistics Service

    • Metrics collection
    • Analytics dashboard
    • Report generation

Tasks per Service

  • Backend implementation
    • Domain models
    • Business logic
    • REST APIs
    • Event publishing
  • Frontend implementation
    • Service-specific UI
    • Integration with Console
    • Dashboard widgets

Phase 6: Integration & Testing (Week 7)

Goals

  • End-to-end integration
  • Performance optimization
  • Security hardening

Tasks

  • Integration Testing
    • Service communication tests
    • Load testing
    • Security testing
  • Optimization
    • Redis caching implementation
    • Database indexing
    • API response optimization
  • Documentation
    • API documentation (OpenAPI)
    • Deployment guide
    • Developer documentation

Deliverables

  • Fully integrated system
  • Performance benchmarks
  • Complete documentation

Phase 7: Monitoring & DevOps (Week 8)

Goals

  • Production readiness
  • Monitoring and alerting
  • CI/CD pipeline

Tasks

  • Monitoring Setup
    • Prometheus metrics
    • Grafana dashboards
    • Log aggregation (ELK stack)
  • DevOps
    • GitHub Actions CI/CD
    • Automated testing
    • Docker image optimization
  • Production Configuration
    • Environment variables
    • Secrets management
    • Backup strategies

Deliverables

  • Production-ready deployment
  • Monitoring dashboards
  • Automated deployment pipeline

Technical Implementation Details

Service Communication Flow

Client Request → Nginx → Console (API Gateway) → Microservice
                           ↓
                    Authentication Check
                           ↓
                    Request Routing
                           ↓
                    Response Aggregation

Database Strategy

MongoDB Instance
├── console_db       # Console service data
├── users_db         # Users service data
├── oauth_db         # OAuth tokens and sessions
├── images_db        # Image metadata
├── applications_db  # Application data
├── data_db          # Generic data storage
└── statistics_db    # Analytics data

API Versioning Strategy

  • All APIs follow /api/v1/ pattern
  • Version in URL path for major versions
  • Header-based versioning for minor updates

Security Implementation

  1. Authentication Flow

    • User login → OAuth service
    • OAuth service issues JWT
    • Console validates JWT on each request
    • Console forwards validated requests to services
  2. Service-to-Service Auth

    • Internal service tokens
    • mTLS for production
    • Network isolation via Docker networks

Development Workflow

  1. Local Development

    docker-compose up -d [service-name]
    docker-compose logs -f [service-name]
    
  2. Testing

    docker-compose exec [service-name] pytest
    
  3. Deployment

    docker-compose build
    docker-compose up -d
    

Success Criteria

  • All services independently deployable
  • Console successfully routes to all services
  • Authentication works across all services
  • Health monitoring shows all services green
  • Load testing shows <100ms p95 latency
  • Zero downtime deployments possible

Risk Mitigation

  1. Service Failure: Circuit breakers in Console
  2. Data Consistency: Event sourcing for critical operations
  3. Performance: Redis caching layer
  4. Security: Regular security audits, dependency updates

Timeline Summary

  • Week 1: Foundation and infrastructure
  • Week 2: Console core implementation
  • Week 3: OAuth service
  • Week 4: Users service
  • Weeks 5-6: Remaining microservices
  • Week 7: Integration and testing
  • Week 8: Monitoring and production setup

Next Steps

  1. Review and approve plan
  2. Set up Git repository
  3. Begin Phase 1 implementation
  4. Schedule weekly progress reviews