mybigman · June 4, 2024 13:37 · Sep 5, 2023
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+# Go - The Ultimate Folder Structure
+
+Organizing your Go (Golang) project's folder structure can help improve code readability, maintainability, and scalability. While there is no one-size-fits-all structure, here's a common folder structure for a Go project:
+
+```go
+project-root/
+    ├── cmd/
+    │   ├── your-app-name/
+    │   │   ├── main.go         # Application entry point
+    │   │   └── ...             # Other application-specific files
+    │   └── another-app/
+    │       ├── main.go         # Another application entry point
+    │       └── ...
+    ├── internal/                # Private application and package code
+    │   ├── config/
+    │   │   ├── config.go       # Configuration logic
+    │   │   └── ...
+    │   ├── database/
+    │   │   ├── database.go     # Database setup and access
+    │   │   └── ...
+    │   └── ...
+    ├── pkg/                     # Public, reusable packages
+    │   ├── mypackage/
+    │   │   ├── mypackage.go    # Public package code
+    │   │   └── ...
+    │   └── ...
+    ├── api/                     # API-related code (e.g., REST or gRPC)
+    │   ├── handler/
+    │   │   ├── handler.go      # HTTP request handlers
+    │   │   └── ...
+    │   ├── middleware/
+    │   │   ├── middleware.go  # Middleware for HTTP requests
+    │   │   └── ...
+    │   └── ...
+    ├── web/                     # Front-end web application assets
+    │   ├── static/
+    │   │   ├── css/
+    │   │   ├── js/
+    │   │   └── ...
+    │   └── templates/
+    │       ├── index.html
+    │       └── ...
+    ├── scripts/                 # Build, deployment, and maintenance scripts
+    │   ├── build.sh
+    │   ├── deploy.sh
+    │   └── ...
+    ├── configs/                 # Configuration files for different environments
+    │   ├── development.yaml
+    │   ├── production.yaml
+    │   └── ...
+    ├── tests/                   # Unit and integration tests
+    │   ├── unit/
+    │   │   ├── ...
+    │   └── integration/
+    │       ├── ...
+    ├── docs/                    # Project documentation
+    ├── .gitignore               # Gitignore file
+    ├── go.mod                   # Go module file
+    ├── go.sum                   # Go module dependencies file
+    └── README.md                # Project README
+```
+
+Here's a brief explanation of the key directories:
+
+- `cmd/`: This directory contains application-specific entry points (usually one per application or service). It's where you start your application.
+
+- `internal/`: This directory holds private application and package code. Code in this directory is not meant to be used by other projects. It's a way to enforce access control within your project.
+
+- `pkg/`: This directory contains public, reusable packages that can be used by other projects. Code in this directory is meant to be imported by external projects.
+
+- `api/`: This directory typically holds HTTP or RPC API-related code, including request handlers and middleware.
+
+- `web/`: If your project includes a front-end web application, this is where you'd put your assets (CSS, JavaScript, templates, etc.).
+
+- `scripts/`: Contains scripts for building, deploying, or maintaining the project.
+
+- `configs/`: Configuration files for different environments (e.g., development, production) reside here.
+
+- `tests/`: Holds unit and integration tests for your code.
+
+- `docs/`: Project documentation, such as design documents or API documentation.
+
+This is a general guideline, and you can adjust it to match the specific needs of your project. Additionally, you can consider using a project layout tool like "golang-standards/project-layout" as a reference to structure your Go project.
+
+## Other Possible
+
+The folder structure for a Go project can vary depending on the size and complexity of the project, as well as personal or team preferences. Here are some alternative folder structures for Go projects:
+
+1. **Flat Structure**:
+   In smaller projects, you might opt for a flat structure where all your Go source files reside in the project root directory. This approach is simple but may become hard to manage as the project grows.
+
+   ```go
+   project-root/
+       ├── main.go
+       ├── handler.go
+       ├── config.go
+       ├── database.go
+       ├── ...
+       ├── static/
+       ├── templates/
+       ├── scripts/
+       ├── configs/
+       ├── tests/
+       └── docs/
+   ```
+
+2. **Layered Structure**:
+   Organize your code into layers, such as "web," "api," and "data." This approach helps separate concerns.
+
+   ```go
+   project-root/
+       ├── main.go
+       ├── web/
+       │   ├── handler.go
+       │   ├── static/
+       │   ├── templates/
+       ├── api/
+       │   ├── routes.go
+       │   ├── middleware/
+       ├── data/
+       │   ├── database.go
+       │   ├── repository.go
+       ├── configs/
+       ├── tests/
+       ├── docs/
+   ```
+
+3. **Domain-Driven Design (DDD)**:
+   In larger applications, consider structuring your project based on domain-driven design principles. Each domain has its own directory.
+
+   ```go
+   project-root/
+       ├── cmd/
+       │   ├── app1/
+       │   ├── app2/
+       ├── internal/
+       │   ├── auth/
+       │   │   ├── handler.go
+       │   │   ├── service.go
+       │   ├── orders/
+       │   │   ├── handler.go
+       │   │   ├── service.go
+       │   ├── ...
+       ├── pkg/
+       │   ├── utility/
+       │   │   ├── ...
+       │   ├── ...
+       ├── api/
+       │   ├── app1/
+       │   │   ├── ...
+       │   ├── app2/
+       │   │   ├── ...
+       ├── web/
+       │   ├── app1/
+       │   │   ├── ...
+       │   ├── app2/
+       │   │   ├── ...
+       ├── scripts/
+       ├── configs/
+       ├── tests/
+       └── docs/
+   ```
+
+4. **Clean Architecture**:
+   You can adopt a clean architecture approach, which emphasizes a separation of concerns between different layers of your application.
+
+   ```go
+   project-root/
+       ├── cmd/
+       │   ├── your-app/
+       │   │   ├── main.go
+       ├── internal/
+       │   ├── app/
+       │   │   ├── handler.go
+       │   │   ├── service.go
+       │   ├── domain/
+       │   │   ├── model.go
+       │   │   ├── repository.go
+       ├── pkg/
+       │   ├── utility/
+       │   │   ├── ...
+       ├── api/
+       │   ├── ...
+       ├── web/
+       │   ├── ...
+       ├── scripts/
+       ├── configs/
+       ├── tests/
+       └── docs/
+   ```
+
+5. **Modular Structure**:
+   Organize your code into separate modules, each with its own directory structure. This approach can be useful when developing multiple independent components within a single project.
+
+   ```go
+   project-root/
+       ├── module1/
+       │   ├── cmd/
+       │   ├── internal/
+       │   ├── pkg/
+       │   ├── api/
+       │   ├── web/
+       │   ├── scripts/
+       │   ├── configs/
+       │   ├── tests/
+       │   └── docs/
+       ├── module2/
+       │   ├── ...
+   ```
+
+Remember that the right folder structure depends on the specific needs of your project and your team's development practices. Choose a structure that helps maintain code organization, readability, and collaboration as your project evolves.