Thanks for pointing out the lack of info on conflict resolution in the README! It's been reported and we'll look at getting that updated ASAP.
In the meantime, you can find a lot of information in the official FAQ on how conflict resolution is handled (https://www.pgedge.com/resources/faq), but at-a-glance, "pgEdge offers eventual consistency between nodes using a configurable policy (e.g. last-writer-wins) for conflict resolution, along with conflict-free delta apply columns (i.e. CRDTs) for running sum fields. This allows for independent, concurrent and eventually consistent updates across multiple nodes."
In the meantime, you can find a lot of information in the official FAQ on how conflict resolution is handled (https://www.pgedge.com/resources/faq), but at-a-glance, "pgEdge offers eventual consistency between nodes using a configurable policy (e.g. last-writer-wins) for conflict resolution, along with conflict-free delta apply columns (i.e. CRDTs) for running sum fields. This allows for independent, concurrent and eventually consistent updates across multiple nodes."