Methods, systems, and apparatus for accessing application data are described. A cookie comprising location data is received from a user device, the location data comprising a cache identifier and a database identifier, the cache identifier identifying a cache of a plurality of caches. A location of the cache of the plurality of caches based on the cache identifier is derived and application data is requested from the cache based on the derived location. In one example embodiment, a determination is made whether the requested application data is not stored in the cache corresponding to the cache identifier and the requested application data is requested from a database of a plurality of databases based on the determination, the database corresponding to the database identifier.