February 2018
Intermediate to advanced
552 pages
13h 46m
English
Content preview from Scala Reactive Programming
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What is an Event?
An Event is a significant change in the state of a thing. Here, a thing can be anything, such as a model, domain, entity, and more.
When a user performs any change action (that means an update operation such as CREATE, UPDATE, or DELETE operations), it updates the state of one or more entities in that system. Each change creates an Event. So, every system generates a sequence of events. Then how do we track them? What is the use of those events? The answer is Event Streams.