DEVICES FOR PROVIDING DISTRIBUTABLE MIDDLEWARE DATA PROXY BETWEEN APPLICATION SERVERS AND DATABASE SERVERS

摘要

The present invention discloses devices Including a transparent client-connection manager for exchanging client data between an application server and the device: a request analyzer for analyzing query requests from at least one application server; a data-retrieval/ command-execution module for executing query requests; a database connection manager for exchanging database data between at least one database server and the device: a cache-memory pool for storing data items from at least one database server: a cache-policy module for determining cache criteria for storing the data Items In the cache-memory pool; and a data-consistency invalidation module for determining invalidated data Items based on invalidation criteria for removing from the cache-memory pool. The cache-memory pool Is configured to utilize memory modules residing in data proxy devices and distributed cache management utility, enabling the memory capacity to be used as a cluster to balance workloads.