Abstract: A data cache server may process requests from a data cache client to put, get, and delete data items into or from the data cache server. Each data item may be based on data in a data store. In response to each request to put a data item into the data cache server, the data cache server may determine whether any of the data in the data store on which the data item is based has or may have changed; put the data item into the data cache memory if none of the data in the data store on which the data item is based has been determined to have or maybe to have changed, and not put the data item into the data cache memory if data in the data store on which the data item is based has been determined to have or maybe to have changed.

Abstract: An SQL query-to-procedure translation system may be used in connection with a relational database management system (RDBMS) that is augmented by a cache and a cache management system that manages the cache. The query-to-procedure translation system may include a data processing system that has at least one computer hardware processor and a configuration that, in response to a query issued by an application program for data from the relational database management system: intercepts the query; generates code that determines if data requested by the query that may be in the cache has changed; and registers the code as a procedure with the RDBMS.

Abstract: A data cache server may process requests from a data cache client to put, get, and delete data items into or from the data cache server. Each data item may be based on data in a data store. In response to each request to put a data item into the data cache server, the data cache server may determine whether any of the data in the data store on which the data item is based has or may have changed; put the data item into the data cache memory if none of the data in the data store on which the data item is based has been determined to have or maybe to have changed, and not put the data item into the data cache memory if data in the data store on which the data item is based has been determined to have or maybe to have changed.