├── server
│   ├── app.go
│   ├── handler          //API core handlers and response functions
│   │   ├── common.go    
│   │   ├── product.go   
│   │   └── review.go     
│── model
│       └── product.go     // Models for the application
│       └── review.go 
│── storage
│       └── product.go     // Data access layer for models
│       └── review.go 
│       └── storage.go
├── configs
│   └── config.go        // Configuration
└── main.go

• GET : Get all products
• POST : Create a new product

• GET : Get a product
• PUT : Update a product
• DELETE : Delete a product

• GET : Get all reviews of a product
• POST : Create a new review for a product

• GET : Get a review of a product
• PUT : Update a review of a product
• DELETE : Delete a review of a product