1. A method, comprising: a first computer system accessing an engine and one or more data files associated with an application service provider network, wherein the application service provider network is configured to provide a set of functions for processing information related to user reviews of items; the first computer system sending the engine and the one or more data files to a second computer system associated with a website accessible by users, wherein the engine comprises software that is configured to: receive a web request from a user device; determine that replying to the web request requires processing information related to user reviews; in response to an indication that processing the web request can be performed locally without having to contact the application service provider network, locally generate a result of a first function of the set of functions using the engine and at least a portion of data in the one or more data files, wherein the indication includes information indicating that replying to the web request requires reading one or more user reviews from a database of user reviews; and transmit the locally generated result to the user device.