Hi author. You can add a function for when there objects is no cache so that was loaded from the internet?
Response time if "Only from cache" is much shorter than "Save to cache" and "Dont update".

If data loaded as Only from cache = cca 13ms per object oject from cache
If data loaded as Save to cache and Dont update = cca 28ms per object from cache

thank you very much. scheme is good job