So, using this approach it would look something like (as a high level example): 1. add metadata

last_synced

to the collections 2. Periodically (lets say every 5 mins) use similar code as above to do comparison of db records

updatedAt

comparing to

last_synced

for the collection the record belongs to. 3. Update the collection's

last_synced

to the current time. (Question: does updating metadata work the same as updating other fields in the collection or how would that look)?