Very important question! The best explanations that cover how it works, as well as its tradeoffs/weaknesses are here:

(Note: You should not use GUN for any data you need strong/global consistency with, like bank account balances and such. There are much better solutions than GUN.)

- http://gun.js.org/distributed/matters.html

- https://github.com/amark/gun/wiki/CAP-Theorem

- https://github.com/amark/gun/wiki/Conflict-Resolution-with-G...