This article is part of the series Integrating your Go service with ELK
When you start developing your application, you typically instrument it with some logging to be able to debug problems later.
Some skip it in the development phase, but once the application hits production, then it is crucial to have some logging.
After all, once users complain that something isn’t working, how would you be able to find the root-cause?
And although logging proves to be useful, many companies don’t really capitalise on its potential as they’re still clinging to the classic way of writing freestyle logs and grep-ing them on their prod machines afterwards.
However, there is so much more potential that logging holds for monitoring our production systems. In this article, I will show you how to get the maximum value from your logs using the ELK stack.
In many companies nowadays, microservices is the de facto way of handling service architecture.
Some do it out of necessity as their application has reached a scale where the monolith is a bottleneck. Others, simply like being onboard the hype train.
Whatever the scenario, the decision is often backed by the classical case for adopting microservices, which every junior dev studies extensively before their system design interview.
What gets often neglected, however, is the problems which come with such an approach.
Each of these problems usually demands a sophisticated solution, which raises system complexity.
One such problem is how to reuse the shared infrastructure components in your microservices. Each of your services will probably have a distinct business logic, but it will also come with a big baggage of infrastructure code.
These components usually don’t change too much between your services – healthchecks, monitoring configs, logging, standard service configurations, etc.
Fortunately, there is a very elegant solution for this problem for your Go services, which utilises the Fx Framework. It helps you by automatically managing your dependencies, but it can do much more than that as I’ll show you in the upcoming sections.
In this article, I will show you how to effectively extract your components into reusable & independent modules which can easily be shared across your Go services.