Abstract: A page controller module is provided for generating a pageview on a computing device according to a page definition that identifies a plurality of blocks corresponding to the pageview. In response to the page definition, and for each of the plurality of blocks, the page controller module initializes a block controller module for the block, which issues data requests to receive values for parameters associated with the block. Further, view modules are provided for rendering the viewable portion of the page using the values received in response to data requests from the block controller module. In some embodiments, block controllers may register data requests with the page controller so that the page controller may manage fulfillment of the data requests. The page controller may manage fulfillment by scheduling registered data requests and/or by reducing redundancies in registered data requests.