Awesome
go-negentropy
Main Idea
This is an implementation of Range-Based-Set-Reconciliation. It's basically a binary search set-reconciliation algorithm. You can read about the details here. This code is basically a re-implementation of Doug Hoyte's repository here.
We have integrated our code into the test suite in that repo, and it passes all tests. We will make a PR to that repo to add our test harness to it.