A Grid event service

摘要: The Grid Event Service (GES) is a distributed event service designed to run on a very large network of server nodes. Clients interested in using this service can attach themselves to one of the server nodes. Clients specify an interest in the type of events that they are interested in and the service routes events, which satisfy the constraints specified by the clients. Clients can have prolonged disconnects from the server network and can also roam the network (in response to failure suspicions or for better response times) and attach themselves to any other node in the server node network. Events published during the intervening period, of prolonged disconnects and roams, must still be delivered to clients that originally had an interest in these events. The delivery constraints must be satisfied even in the presence of server failures. Server nodes can fail and remain failed forever. Clients need not wait for the failed server …