Reduce memory overhead of _deserialize_from_store #210
Description
Observed behavior
When syncing large amounts of data and upon successful transfer, that data is deserialized into the store (_deserialize_from_store), memory usage often spikes.
Expected behavior
The behavior of _deserialize_from_store should reduce its memory usage by loading only the necessary data / models into memory.
User-facing consequences
In some online deployments with strict resource constraints, OOM killer may kill the process that is handling the deserialization.