Last week, I officially started learning how to build RESTful APIs in Go.
To keep things simple, I focused on the fundamentals before jumping into larger projects. My first API can:
β
Retrieve all albums (GET /albums)
β
Add a new album (POST /albums)
β
Retrieve a specific album by its ID (GET /albums/:id)
Along the way, I learned what some of Gin's core features actually do instead of just copying code from tutorials.
A few concepts that finally clicked for me:
πΉ gin.Context
Carries information about the incoming HTTP request.
Helps read request data, validate input, and send responses back to the client.
πΉ Context.IndentedJSON()
Converts Go structs into properly formatted JSON.
Sends the JSON back to the client along with the appropriate HTTP status code.
πΉ BindJSON()
Reads the JSON sent in the request body.
Maps that data directly into a Go struct, making it easy to work with user input.
One thing I'm trying to do differently this time is document everything I learn instead of rushing to the next topic. I even created a README explaining what each function in my project does, because I want to understand the "why" behind the codeβnot just make it work.
This is only the beginning, but every endpoint I build is helping me understand how backend systems communicate with clients.
Next up:
Input validation
Better error handling
Connecting the API to a database
Authentication
I'm looking forward to seeing how much I improve over the next few months. π
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