1. A computer-implemented method of processing a first image query across index tables with unequal priority, the index tables containing indexes of images, the method comprising: receiving, with one or more processors, an image and generating the first image query based on the received image; generating, with the one or more processors, an index priority for the first image query based on information associated with the received image; submitting, with the one or more processors, the first image query to a high priority index for recognition according to the index priority, the high priority index organizing data based on a timestamp corresponding to a most recently received second image query; responsive to unsuccessful recognition at the high priority index, submitting the first image query to one or more lower priority indexes for recognition according to the index priority, the one or more lower priority indexes being separate from the high priority index; receiving recognition results that identify a page and a location of a matching image within the recognition results; and transmitting the recognition results.