O'Reilly logo

Go: Design Patterns for Real-World Projects by Mat Ryer, Mario Castro Contreras, Vladimir Vivien

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Concurrent Publish/Subscriber design pattern

In this section, we will implement the Observer design pattern that we showed previously on Behavioral patterns, but with a concurrent structure and thread safety.

Description

If you remember from the previous explanation, the Observer pattern maintains a list of observers or subscribers that want to be notified of a particular event. In this case, each subscriber is going to run in a different Goroutine as well as the publisher. We will have new problems with building this structure:

  • Now, the access to the list of subscribers must be serialized. If we are reading the list with one Goroutine, we cannot be removing a subscriber from it or we will have a race.
  • When a subscriber is removed, the subscriber's ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required