A system transfers data for an application. The system determines a per request data size, and sends a data transfer request for transferring a portion of the data from a client to a server according to the per request data size, where the server is configured to host the application. The system then receives a response from the server for the data transfer request, and adjusts the per request data size based on a measure of the data transfer request and the response. The adjusted per request data size is configured to be used for sending other portions of the data from the client to the server.