1. A method for supporting fast process level death detection in a data grid cluster, comprising: connecting a plurality of process nodes in the data grid cluster to form a network ring, wherein each node in the network ring watches another node; detecting a death of a first process node in the network ring by a second process node, when the second process node notices that its connection to the first process node is closed; and informing other process nodes in the network ring that the first node is dead.