Writing a basic HTTP server is easy using Gin package

To run http server

for gin
git clone https://github.com/vinodnextcoder/golang-simple-http-server.git
 you go any dorectory install package and run code
cd golang-simple-http-server/gin-web-app
Install Gin:
go get github.com/gin-gonic/gin
You can run your Gin web application by executing the main.go file:
go run main.go

to call api endpoint in postman

for folder gin-web-app
http://localhost:3001
http://localhost:3001/user/testuser
http://localhost:3001/contact

You can go to swagger doc

http://localhost:3001/swagger/index.html