On: CQRS and Event Sourcing Intro for Developers

[mason55]

> requires commitment to a handful of golden rules or the entire thing comes crashing down

What are the golden rules?

[dmitryminkovsky → mason55]

Two bigs ones for me:

- Don't use the read side from the write side.

- Each aggregate should own its data (or more abstractly, the basics of DDD, bounded contexts[0]).

[0]: https://cqrs.nu/Faq

[eithed → dmitryminkovsky]

Every state change needs to be reflected as event. Does your function need to save something to DB? Then your functionality should create event which will perform the DB save.