DNScup: Strong Cache Consistency Protocol for DNS

Effective caching in Domain Name System (DNS) is critical to its performance and scalability. Existing DNS only supports weak cache consistency by using the Time-To-Live (TTL) mechanism, which functions reasonably well in normal situations. However, maintaining strong cache consistency in DNS as an indispensable exceptional handling mechanism has become more and more demanding for three important objectives: (1) to quickly respond and handle exceptional incidents, such as sudden and dramatic Internet failures caused by natural and human disasters, (2) to adapt increasingly frequent changes of IP addresses due to the introduction of dynamic DNS techniques for various stationed and mobile devices on the Internet, and (3) to provide finegrain controls for content delivery services to timely balance server load distributions. With agile adaptation to various exceptional Internet dynamics, strong DNS cache consistency improves the availability and reliability of Internet services. In this...

• Type: Conference
• Year: 2006
• Where: ICDCS
• Authors: Xin Chen, Haining Wang, Shansi Ren
• Keywords: Cache Consistency, Distributed And Parallel Computing, DNS Cache, ICDCS 2006, Strong Cache Consistency