SCALABLE DOMAIN NAME SYSTEM WITH PERSISTENCE AND LOAD BALANCING

摘要

Each DNS server is associated with a subset of the DNS groups in the network and the invention checks to see if the client DNS server is part of the DNS group that the DNS server is authoritative. If, then the request is forwarded to the proper DNS server. Otherwise, the invention checks a persistence table to see if a persistent response is required for the request. If yes, the appropriate IP address entry in the table is returned to the requestor. If the invention determines the load, availability, and latency to determine the proper content server's address to return to the requestor. The DNS server sends any responses to forwarded requests to the client DNS server. The invention also allows the persistence and latency tables to be located on a set of table servers within the network.