Clarification on caching all items and fetching only changed items

[jrvarma]

I am trying to use Etebase's Local Cache to recreate the Etesync 1.0 sync functionality where the local cache could be updated with only changed items.

My plan is as follows:

At end of day

• Use item_mgr.cache_save(item) to save the item to cache. Presumably, I would have to put this in a loop (for item in items:) to save all items to local storage.
• Also store items.stoken to local storage.

Come back next day

• Run a item_mgr.cache_load(cache_blob) loop to load all items.
• Fetch new items with items = item_mgr.list(FetchOptions().stoken(stoken))

What I do not understand is how to merge the cache and the new/updated items. One possibility is to convert items into a python dict with uid as key and do something like
updated_items_dict = cached_items_dict.update(new_items_dict)

Would appreciate any help on how to go about doing this.

Also the python source code contains a function cache_save_with_content. Is this of any use in this context? I can understand python code but not rust