Backend Engineering with Go

🚀A learning project built while taking "Backend Engineering with Go" Udemy course

Course: Backend Engineering with Go

✨ Features

🏗 Architecture & Design

• Clean Layered Architecture (Transport/Service/Storage)
• Repository Pattern for data access
• REST API

🔐 Authentication & Authorization

• JWT Token-based authentication
• Role-based authorization with middleware
• User registration & activation flow & email
• Secure password handling

💾 Database & Persistence

• PostgreSQL with connection pooling
• SQL migrations with version control
• Database seeding for development
• SQL transactions for data consistency
• Optimistic concurrency control
• Query timeouts management

📊 Social Features

• User management (profiles, registration)
• Post creation with comments
• User following system
• Feed algorithm with pagination
• Feed filtering and sorting

🛠 Development & DevOps

• Swagger/OpenAPI auto-generated documentation
• Structured logging system
• Continuous Integration setup

🚀 Performance & Security

• Rate limiting middleware
• CORS handling
• Caching strategies (user profiles)
• SQL indexes optimization
• Concurrency control with mutexes
• Server metrics monitoring

✅ Testing & Quality

• User handler unit
• Error handling standardization
• Payload validation
• Performance testing with Autocannon

⌨️ Commands

go run ./cmd/api

migrate lib

migrate create -seq -ext sql -dir ./cmd/migrate/migrations create_users

make migrate-up

swag init

npx autocannon http://localhost:8080/v1/users/2 --connections 10 --duration 5 -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJzb2NpYWwiLCJleHAiOjE3NTkyMTc4NDgsImlhdCI6MTc1ODk1ODY0OCwiaXNzIjoic29jaWFsIiwibmJmIjoxNzU4OTU4NjQ4LCJzdWIiOjEzN30.x3wIW1uByni6qpvqPF4-P3o1dinICeubMIB_-pK65e8"

npx autocannon -r 1000 -d 2 -c 10 --renderStatusCodes http://localhost:8080/v1/health

npx autocannon -c 1 -r 100 -d 1 --renderStatusCodes http://localhost:8080/v1/health