In certain embodiments, a database system for processing a query request comprises a first master node operable to receive a plurality of requests from a plurality of clients coupled to the database system. The first master node is capable of processing a first predetermined number of query requests substantially concurrently, each of the plurality of query requests comprising one or more parameters and being associated with at least one of a plurality of precompiled queries. The first master node is also operable to assign at least a first subset of the first predetermined number of query requests as being available to a first client, and to assign at least a second subset of the first predetermined number of query requests as being available to a second client.