A method for caching includes determining a degree of relatedness for a database entry stored in a concept table (602). The concept table is stored in cache. The degree of relatedness is based on a comparison between a concept of data of the database entry and a concept of the concept table. The method includes determining an amount of data usage for the database entry where the data usage includes an amount of usage of the database entry while in cache (604). The method includes determining a cache flushing rating for the database entry (606). The cache flushing rating is determined from the degree of relatedness of the database entry and the amount of data usage of the database entry. The method includes flushing the database entry from the cache in response to the cache flushing rating of the database entry being below a cache flush threshold (610).