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Building RESTful Web services with Go

You're reading from   Building RESTful Web services with Go Learn how to build powerful RESTful APIs with Golang that scale gracefully

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788294287
Length 316 pages
Edition 1st Edition
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Author (1):
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Naren Yellavula Naren Yellavula
Author Profile Icon Naren Yellavula
Naren Yellavula
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Toc

Table of Contents (13) Chapters Close

Preface 1. Getting Started with REST API Development FREE CHAPTER 2. Handling Routing for Our REST Services 3. Working with Middleware and RPC 4. Simplifying RESTful Services with Popular Go Frameworks 5. Working with MongoDB and Go to Create REST APIs 6. Working with Protocol Buffers and GRPC 7. Working with PostgreSQL, JSON, and Go 8. Building a REST API Client in Go and Unit Testing 9. Scaling Our REST API Using Microservices 10. Deploying Our REST services 11. Using an API Gateway to Monitor and Metricize REST API 12. Handling Authentication for Our REST Services

Understanding Go's net/http package

Go's net/http package deals with HTTP client and server implementations. Here, we are mainly interested in the server implementation. Let us create a small Go program called basicHandler.go that defines the route and a function handler:

package main
import (
"io"
"net/http"
"log"
)
// hello world, the web server
func MyServer(w http.ResponseWriter, req *http.Request) {
io.WriteString(w, "hello, world!\n")
}
func main() {
http.HandleFunc("/hello", MyServer)
log.Fatal(http.ListenAndServe(":8000", nil))
}

This code does the following things: 

  1. Create a route called  /hello
  2. Create a handler called MyServer.
  3. Whenever the request comes on the route (/hello), the handler function will be executed.
  4. Write hello, world to the response.
  5. Start the server...
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