A method and system for controlling bandwidth used to communicate between at least one client and a server. A history is accessed that includes information about communications between the at least one client and a server during a period of time. The history is employed to determine a send time at which a message could be sent without exceeding a bandwidth threshold. The bandwidth threshold indicates an upper limit for an amount of bandwidth allowed during a period of time to communicate between the at least one client and the server. A data structure is then modified to delay sending the message until at least the send time.