How to develop a productive HTTP client in Golang (Go)

9h 44m 29s
English
Paid

Course description

Have you ever called a REST API from your Go program? Did you implemented your own HTTP client or did you ended up using some of the thousand libraries out there? Do you know what your HTTP client is doing in the background? In this course we're starting from scratch! We're going to remember how a basic HTTP call looks like by digging into the request & response objects. We're going to write a basic HTTP client to perform HTTP requests and then use it in productive applications.

Read more about the course

 What issues do we have? Can we scale our applications by following this approach? Of course not! 

That's why we're creating an HTTP client library that provides:

  • Fast, reliable and friction-free HTTP connections.

  • Support for all HTTP methods: GET, POST, PUT, DELETE, PATCH and more!

  • A Concurrency-Safe HTTP client that you can use without worrying about performance.

  • Content type management and optimization.

  • Mocking features out of the box.

  • A clean interface in case you want to unit test your code without relying on integration testing features.

  • A robust implementation so you won't need any external dependency whatsoever.

  • Completely customizable interface: timeouts, transport layer, custom HTTP client and lots of useful features.

  • A library that is PRODUCTION-READY!

If you're looking to integrate a 3rd party REST APIs in your code, you'll need to perform an HTTP call to it. Make sure you take a look at this course before even considering alternatives out there that will force you to use different dependencies for running, testing and extending your code! As Robert Pike says: "A little copying is much better than a little dependency". In this course we're not only getting rid of the dependencies but we're also getting rid of the copying. We're not using anything more than the Go's standard library to design & develop our own HTTP client.

This client will the baseline for all of the applications we're going to build later, making our business scale and grow as fast as we can Go.

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# Title Duration
1 Introduction 01:35
2 Welcome! 02:51
3 The reason for this course 08:43
4 What we're going to build 03:15
5 How an HTTP call looks like 13:23
6 Connections and timeouts 08:32
7 Implementing a basic HTTP GET 06:20
8 Default problems 21:33
9 The reason for a new library 25:36
10 Introduction to Go modules 20:18
11 Go basics: Structs, functions, interfaces and methods. 16:05
12 Adding basic behavior 13:24
13 Defining custom & common headers 17:41
14 Dealing with the request body 13:22
15 Testing, testing and testing! 18:09
16 Be careful with code coverage 18:38
17 Dealing with timeouts 16:07
18 Allow timeout customization 16:28
19 Allow timeout disabling 09:05
20 Builder pattern applied 15:47
21 Refactoring our builder implementation 06:11
22 Making the client concurrent-safe 09:04
23 Using our custom response implementation 18:11
24 Creating our examples 13:16
25 Should we provide mocking features? 12:24
26 Defining the Mock struct 14:12
27 Adding the mock server 17:35
28 Responding from the mock server 13:03
29 Adding a default mock 17:20
30 How to flush every active mock 09:01
31 Improving mock body and keys 07:57
32 How to publish a Go module 08:02
33 How to use our Go module 09:27
34 Easily testing API calls with our library 18:43
35 Allowing custom HTTP client 09:31
36 Clean our public interface 14:02
37 Adding documentation to our code 08:40
38 Adding more examples 21:08
39 Allow user agent definition 07:56
40 Defining common constants 06:29
41 Releasing the first stable version! 07:44
42 Cleaning our mocking interface 19:05
43 Changing how we mock requests 23:19
44 Cleaning our mock server 07:15
45 What we have done 18:02

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