March 2025
Intermediate to advanced
202 pages
4h 45m
English
Content preview from Real-World Event Sourcing
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Modeling a Process
A recurring theme throughout this book is that the model and design of an event-sourced system are often more important than the code itself. Modeling process managers may be the best example of this theme.
Writing a function that takes an event and returns a command is relatively easy, but figuring out when you should and should not be using a process manager often proves far more difficult.
The simplest possible process has a discrete beginning, middle, and end. In technical terms, that means an event must start the process, one or more events may advance the process, and one or more events must stop the process.
Required and Optional Events | |
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Pay special attention to the use of may and must here. A process always requires ... | |
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