ABC Company has approximately 150’000 products in their catalog and wants to put these within a Coherence cache to improve performance and access times of their existing JEE application without too much change to existing code. There are a number of servlets that get the same product information multiple times within a page. There are also a number of server-based processes that run at regular intervals and also request product information many times. Products have small changes which need to be updated during the day. 
What would be the most appropriate caching scheme to use ？ （）