So one big difference is this tails the bin log (as a replication slave), while Hasura polls. Hasura makes that polling efficient by multiplexing the polling qu

So one big difference is this tails the bin log (as a replication slave), while Hasura polls. Hasura makes that polling efficient by multiplexing the polling queries transparently so they send one query to poll N queries on the same table with the same shape. But once you're polling a large percentage of your whole data set, the bin log approach has a clear advantage.