[gfodor]

Author here. KV did not provide the consistency guarantees needed for this to work. If you were signaling across two edge nodes, you didn't see candidates until the data was replicated, which took a long time. R2 doesn't have this problem.

[kentonv]

This is because R2 uses Durable Objects under the hood to achieve consistency. But you'd probably get better results using Durable Objects directly.

[gfodor]

At the time I wrote this it was prohibitively expensive.