August 2018
Intermediate to advanced
372 pages
9h 29m
English
Content preview from Software Architecture with Spring 5.0
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Command
A command is an operation performed within an application that emits one or more events as the result of a successful or failed execution. We can think about these as operations that are intended to modify the state of a system.
Commands are called actions. This makes a lot of sense if we take their intended use into consideration. The following list shows some examples of such commands:
- Transfer money
- Update user information
- Create an account
It's highly recommended that you use present tense verbs for naming commands, as demonstrated with these examples.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.