Subscribe to supply/borrow events rather than full update in Worker

[haydenshively]

Even pulling from the local Geth node takes ~2 seconds for 50 accounts. This is horribly slow. If we subscribe to supply and borrow events and update on an as-needed basis, rather than re-loading all data for every account every time, we can speed things up substantially and increase the number of accounts that we're watching (e.g. take it from 50 -> 5000)

[haydenshively]

We're missing out on liquidations because we can't watch enough accounts at once. When markets are volatile, this is extra bad.

[mpereiraesaa]

We're missing out on liquidations because we can't watch enough accounts at once. When markets are volatile, this is extra bad.

Have you checked if there are limits on adding listeners for example over 10, 20 etc contracts in order to watch accounts, comptroller, tokens etc Why we can't watch enough accounts at once?.