I have a address list and whant to load the data via AJAX, so I could use a AjaxProxy. After Reloading the page, the store reloads the data from the server, but I think, this haven't to be. My idear was to use a SessionStorageProxy to save via AJAX loaded data localy. So after reload the page I could look to the session storage and if no data exists, I could load via AJAX. My question is, what is the best practice to realize this? Should I have a store with a AjaxProxy and a Model with a SessionStorageProxy or did I have to create a similar model and store?