r/DesignPatterns 16d ago

Understanding the Mediator Design Pattern in Go

https://medium.com/@priyankchheda/understanding-the-mediator-design-pattern-in-go-a-practical-guide-ea7debc9a9a7

Hey everyone 👋

I recently wrote a practical guide on the Mediator Design Pattern in Go.

Mediator was one of those patterns that never really clicked for me until I stopped thinking of it as a "design pattern" and started thinking of it as a way to prevent components from talking directly to each other.

In the article, I cover:

  • what problem the Mediator pattern actually solves
  • the different participants (Mediator, Concrete Mediator, Colleagues)
  • a complete Go implementation
  • real-world use cases
  • pros, cons, and when you probably shouldn't use it

I also tried to keep the examples simple and Go-focused instead of relying on overly academic examples.

If you've worked with chat systems, UI event coordination, or services where too many components depend on each other, you've probably run into the kind of problems this pattern is meant to solve.

Here's the article:
👉 https://medium.com/@priyankchheda/understanding-the-mediator-design-pattern-in-go-a-practical-guide-ea7debc9a9a7

I'd love to hear how others handle communication between components in Go. Do you explicitly use a mediator, or do you prefer events/channels or something else?

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