Software Design Patterns (Observer)

Published at July 25, 2020 ·  2 min read

This the third part of the Software Design Patterns series, in this post I’m going to talk about the Observer Pattern. This pattern is not exactly the same as the Publisher/Subscriber pattern but is very similar in the way that we have a publisher instance that publishes messages and we also have subscribers that are subscribed to the publisher’s messages. This pattern can be really useful because we could build a workflow where we can have the Publisher publish to the subscribers that an image have been downloaded and then have the subscribers transform that image into multiple formats....