Electronic files are selectively assigned to a plurality of different indexing queues by one or more dynamic throughput threshold gates based on characteristics of the different indexing queues as well as the static file characteristics associated with each of the files. The files are then indexed. Upon detecting a change in a dynamic characteristic of one or more indexed files, the throughput threshold gate(s) are then modified to obtain, maintain or modify a desired throughput for one or more of the indexing queues.