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Go Recipes for Developers

Go Recipes for Developers

By : Burak Serdar
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Go Recipes for Developers

Go Recipes for Developers

By: Burak Serdar

Overview of this book

With its simple syntax and sensible conventions, Go has emerged as the language of choice for developers in network programming, web services, data processing, and other settings. This practical guide helps engineers leverage Go through up-to-date recipes that solve common problems in day-to-day programming. Drawing from three decades of distributed systems engineering and technical leadership at companies like Red Hat, Burak Serdar brings battle-tested expertise in building robust, scalable applications. He starts by covering basics of code structure, describing different approaches to organizing packages for different types of projects. You’ll discover practical solutions to engineering challenges in network programming, dealing with processes, databases, data processing pipelines, and testing. Each chapter provides working solutions and production-ready code snippets that you can seamlessly incorporate into your programs while working in sequential and concurrent settings. The solutions leverage the more recent additions to the Go language, such as generics and structured logging. Most of the examples are developed using the Go standard library without any third-party packages. By the end of this book, you’ll have worked through a collection of proven recipes that will equip you accelerate your Go development journey.
Table of Contents (20 chapters)
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Making HTTP calls

The Go standard library offers two basic ways of issuing HTTP calls to interact with websites and web services: if you do not need to configure timeouts, transport properties, or redirect policies, simply use the shared client. If you need to do additional configuration, use http.Client. This recipe demonstrates both.

How to do it...

  • The standard library includes a shared HTTP client. You can use that to interact with web servers using the default configuration:
    response, err := http.Get("http://example.com")
    if err!=nil {
      // Handle error
    }
    // Always close response body
    defer response.Body.Close()
    if response.StatusCode/100==2 {
      // HTTP 2xx, call was successful.
      // Work with response.Body
    }
  • If you need to apply different timeout values, change the redirect policy, or configure the transport, create a new http.Client, initialize it, and use that:
    client:=http.Client{
      // Set a timeout for all outgoing...
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