Sunday, January 30, 14:15-15:15
at 14:00
Schreiber Building, Room 309
DNS lookup times exhibit high variance, even when resolving the same
hostname. For well-connected clients, DNS lookups are a dominant
cause of pathological delays. Hence, they increase the inconsistency
in the quality of Internet-service. Furthermore, DNS lookup time
is
not addressed by continuing improvements such as higher-availablity
Web sites and increased bandwidth. Thus, as the quality of Internet
service rises, the degrading effect of DNS lookup time becomes even
more noticeable.
This performance bottleneck can be addressed by increasing local
availability of DNS records. We propose and evaluate enhancements
to
DNS caching which do so. Our approaches operate on top and
consistently with DNS, and require only local deployment to be
effective.
This is joint work with Haim Kaplan.
For colloquium schedule, see http://www.math.tau.ac.il/~zwick/colloq.html