The pull model, is similar to having some metrics to choose which backend to push to. I believe push/pull are the two faces of the same coin. You might physica

The pull model, is similar to having some metrics to choose which backend to push to. I believe push/pull are the two faces of the same coin. You might physically initiate a connection one way or the other. You might in abstract push or pull information. Ultimately you are trying build an oracle that predicts the future.