expense-tracker-api/RestAPI - Checklist.txt at main · CeaDev/expense-tracker-api · GitHub

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`
Step-by-Step Plan to Build a REST API in Go

1. Define the API Contract
- Identify resources (users, orders, products) (DONE)
- Define endpoints
- Define request/response format (JSON)
- Define HTTP methods
- Define status codes
- Optionally create OpenAPI/Swagger specification

5. Implement Routing
GET /expenses
GET /expenses/{id}
POST /expenses
PUT /expenses/{id}
DELETE /expenses/{id}

8. Business Logic Layer
Handler → Service → Repository

10. Middleware
Examples:
- logging
- request ID
- rate limiting
- CORS

11. Error Handling
Example response:
{
 "error": "user_not_found",
 "message": "User does not exist"
}

13. Logging
Libraries:
- Zap
- Logrus
- Go standard log

14. Configuration
Use environment variables or config libraries.

15. Testing
Unit Tests:
go test ./...

Integration tests for endpoints.

16. API Documentation
Tools:
- Swagger
- Swaggo

17. Database Migrations
Tools:
- golang-migrate
- goose

18. Containerization
Use Docker with a Dockerfile.

19. Deployment
Cloud platforms:
- AWS
- Google Cloud
- DigitalOcean
- Render

20. Monitoring
Tools:
- Prometheus
- Grafana

Typical request flow:

Client
 ↓
Router
 ↓
Middleware
 ↓
Handler
 ↓
Service
 ↓
Repository
 ↓
Database

Minimum API Requirements:
1. HTTP server
2. Router
3. Handlers
4. Models
5. Business logic
6. Database access
7. JSON responses
`