Where is observer pattern used in real life?

Where is observer pattern used in real life?

A real world example of observer pattern can be any social media platform such as Facebook or twitter. When a person updates his status – all his followers gets the notification. A follower can follow or unfollow another person at any point of time.

What type of design pattern is the observer?

Observer is a behavioral design pattern that lets you define a subscription mechanism to notify multiple objects about any events that happen to the object they’re observing.

Is Pub sub Observer pattern?

Pub/sub is an event system, the observer pattern uses an event system to publish events AUTOMATICALLY on change of the object.

What is the Observer pattern good for?

The Observer pattern provides you with the following advantages: It supports the principle of loose coupling between objects that interact with each other. It allows sending data to other objects effectively without any change in the Subject or Observer classes. Observers can be added/removed at any point in time.

Is Kafka an observer pattern?

The observer pattern is generally implemented in a single-application scope. On the other hand, the publisher-subscriber pattern is mostly used as a cross-application pattern (such as how Kafka is used as Heart of event-driven architecture) and is generally used to decouple data/event streams and systems.

Is Redux The observer pattern?

As you can see, Redux is an implementation of the Observer pattern. The beauty of this pattern is that an observer is observing only the relevant slice of the app state instead of the entire app state. The observer is only updated when necessary.

Is Pub sub observer pattern?

Is Webhook observer pattern?

The observer pattern could be implemented in any event-driven systems, but webhooks are restricted to, you guessed it, the web. This implies that they must communicate over a web protocol—HTTP in almost every cases.