1. An adaptive data replication and caching system configured for deployment at the network edge, said system comprising: a computing system comprising at least one computer with memory and at least one processor; a data store coupled to the computing system; a data caching system configured to cache application data in a cache in the data store and to satisfy queries for application data also in the data store from said cache; a data replication system configured to replicate application data separately stored in the data store from said cached application data in said data store and to satisfy queries for application data against said replicated application data; and, a configurator for configuring one portion of said data store for exclusive use by said data caching system and another different portion of said data store for exclusive use by said data replication system, the configurator dynamically shifting the configuration of the data store to change an allocated portion of the data store for the exclusive use by the data caching system, and also to change an allocated portion of the data store for the exclusive use by the data replication system in response to access patterns of different database tables in a database.