Methods, systems, and computer-readable storage media for data transfer with a forecast model, the method being executed by one or more processors and including: receiving, by a server-side computing device and from a client-side proxy, a query including a plurality of item references associated to a new item, retrieving, by the server-side computing device, a plurality of data sets from a repository, each of the plurality of data sets including a respective time stream corresponding to a respective item reference, providing, by the server-side computing device, a result data set by aggregating the plurality of data sets, and transmitting, by the server-side computing device, the result data set to the client-side proxy, for forecasting a future time stream of the new item using the forecast model.