HIGH AVAILABILITY SYSTEM, REPLICATOR AND METHOD

摘要

The present specification provides a high availability system. In one aspect a replicator is situated between a plurality of servers and a network. Each server is configured to execute a plurality of identical message processors. The replicator is configured to forward messages to two or more of the identical message processors, and to accept a response to the message as being valid if there is a quorum of identical responses.

主权项

1. A high availability system comprising:
a replicator connectable to a network and configured to receive a message from the network and to forward the message; a plurality of servers connected to the replicator, each of the servers configured to receive the message forwarded by the replicator; and at least one message processor in each of the servers, the at least one message processor configured to process the message, to generate a processor response message and to return the processor response message to the replicator, wherein the replicator is further configured to generate a validated response message based on the processor response messages, wherein the replicator is further configured to determine whether each of the processor response messages from the plurality of servers is equal to every other processor response message.