April 2020
Intermediate to advanced
292 pages
6h 50m
English
If you’ve ever read L. Frank Baum’s classic The Wonderful Wizard of Oz, then you’re familiar with the trope of the man behind the curtain. The way we left things in the previous chapter is kind of like that, only we don’t even have anything behind the curtain—it’s good and empty there. The register-users application is writing commands, but no one is home processing them.
We’ll fix that in this chapter. We’re working in two places here:

We’re going to implement the identity Component and start processing those Register commands. But handling them will require a little more from the Message Store. We ...
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