Volley Android Library - android-volley

I want to update database and get the updated value from the database. Volley uses cache mechanism. I want to change my code such that when database is updated then the data will be fetched from the database server but when the database is not updated then the data will be fetched from the cache.
In my app the database is updated but the changes is not reflected in my app. When i reinstall the app the changes is reflected in the app. How to handle the cache mechanism of volley to handle the database updates. Please help me....

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