The update seems ok to be done every day or on every startup, we don't update all the time anyway and at most you get the update some hours later which isn't bad.

Notice that the registry is not in the same server as brackets.io and is not even owned by Adobe, is hosted by jrowny company. So we should ckeck wicth him about the bandwidth about checking a lot more often would be. Also, this might change with another API to request information about just the extensions required.