caching - Django 1.8: Re-render view on Database Update -

currently i'm writing view displays data database. data comes api call application. @ moment i'm updating data every 15 minutes.

but want update data on every view access, unfortunately receiving , storing data takes time. every refresh on view takes time receiving, storing , rendering. display current data database on view @ access message data updated. after data has been updated in database new data should displayed message data has been updated.

i have searched different possibilities caching, singal usage or templateresponse rendering i'm not sure best method , how can archive in elegant way.