Before working with the cache, you must instantiate the DataCacheFactory class. If no parameters are provided to the DataCacheFactory class constructor, the cache client configuration parameters come from the application configuration file. If configuration settings are passed to the DataCacheFactory class constructor, those configuration settings are used for all cache clients obtained from that DataCacheFactory object. Configuration settings passed to the constructor override settings specified in the application configuration file. For more information about configuration options and settings for the cache client, see Configuration (Windows Server AppFabric Caching).