You have the option of enabling caching for a data source. After you have enabled caching, you should also set the Time to live (TTL) in seconds.
To enable caching for a data source, follow these steps.
In the Edit Data Source form, expand Enable Authentication, Caching, Proxy, Insecure Access.
Set the Enable caching slider to On.
From the dropdown list, select a predefined cache type.
Click Preview Data Source (optional).
Click Save Data Source.