A data interface efficiently transports, manages, and provides data transfer. The data transfer may happen between a data storage layer and a presentation layer, as examples. The presentation layers may be graphical user interfaces that display or report complex data sets, with the data storage layer providing the source data for the presentation layers. The data interface implements a data link layer that efficiently caches, stores, and locates query results, while simultaneously handling security. The data link layer may include load balancing, efficient cache refresh, and other features.