I would like to know if it is possible for the API team to add a version number or hash for each of the lists (regions, sizes, images). I have commands for refreshing and updating my database from the DO API, but perhaps this could be more controlled if there is some indication that a change in the data actually occurred. Even a “seconds since epoch” time stamp would be enough to know that an update is required.

Hitting the DO API in real time when someone is selecting a region, then size, then image is really slow, and not really necessary. Hence my local caching of the data.