The previous post on Dependency Injection in Go stirred up some heated responses on Reddit and Twitter. I’m writing this post to illustrate some good benefits of Dependency Injection in Go when applied to some benefit. I will also demonstrate an additional, declarative DI pattern of the Factory model presented in the previous installment on this subject.
Dependency Injection is a powerful approach to providing your applications with required objects and configuration instead of declaring them in code. This injection is usually used to provide mock objects for unit testing, or to run the same application in multiple environments.
We covered a few useful tricks in the previous installment of this blog series, and now I’m going to show you a few more which might make your life even simpler.
It’s been a while since I’ve started programming with Go, and I managed to pick up certain tricks along the way, which I’ll present you with. Use them wisely and you’ll be on your way to creating that beautiful product or service you’ve been itching to start.
Coding competitions are a good way to test and improve your skills. Some of the skills you might already have just by the nature of the engineering job itself - you have to set up your development environments, trouble-shoot connectivity issues, and solve problems when they occur. I don’t need to tell you that it’s better to learn these skills in a controlled environment, and perhaps not while watching your production systems fail. And in case that does happen - you don’t want to be the one who’s just looking at whatever metrics you have and pray for some kind of miracle. But, putting a time limit on a competition - it keeps some pressure on you, just like the real thing.
As I wrote some weeks ago in “How to live inside a docker container?”, when you pass a docker socket to your container, you’re essentially enabling the container full access to your Docker host OS. This means that you can create containers, pull images, or more destructively - stop and delete containers and images.
