realtime_chat_app (Go)

A real-time chat application built with Golang, GIN, GORM, Sqlc, Redis, Mysql and Websockets.

Features

• JWT authentication with email OTP verification
• Real-time chat (1-1 and group) via WebSocket
• Redis caching for sessions or online presence
• SQLC for type-safe database operations
• RESTful API endpoints built with Gin

Tech Stack

• Golang: - Programming language.
• Go – Core programming language
• Gin – HTTP framework
• GORM – ORM for MySQL
• SQLC – SQL → Go code generation
• Redis – In-memory cache
• WebSocket – Real-time bi-directional communication
• JWT – Token-based authentication

Project Structure

chat_realtime_go/
├── cmd/
│ └── server/ # Main server entry point
├── config/ # Configuration loader (MySQL, Redis, etc.)
├── db/ # SQL schema, migrations
├── global/ # Global variables/constants
├── internal/
│ ├── controller/ # HTTP + WebSocket handlers
│ ├── dto/ # Request/response DTOs
│ ├── model/ # GORM models
│ ├── repository/ # DB interaction logic
│ ├── router/ # Gin router setup
│ ├── service/ # Business logic
│ ├── websocket/ # WebSocket core logic
│ └── utils/ # Helper utilities
├── pkg/
│ ├── logger/ # Logging setup
│ ├── middleware/ # Custom middleware (auth, logging)
│ └── response/ # Standardized API response format
├── settings/ # Env variable binding
├── sqlc/ # SQLC-generated query code
├── templates-email/ # Email OTP HTML templates
├── test/ # Unit and integration tests
├── .env.example # Sample environment config
├── sqlc.yaml # SQLC config file
├── go.mod
├── go.sum
└── README.md

Purpose

• Learn Golang: Understand and practice backend development using Golang.
• Learn Websockets: Implement real-time communication features.
• Modern Technologies: Implement JWT, OAuth2, and realtime features.
• Hands-On Experience: Build a working system and enhance your development skills.

Getting Started

git clone https://github.com/dinhdev-nu/chat_realtime_go.git
cd chat_realtime_go
cp .env.example .env
go mode download
sqlc generate
go run ./cmd/server/main.go