VeriSign's rapid DNS updates in .com/.net

Thu Jul 22 07:11:46 UTC 2004

Matt, others,

I am a quite concerned about these zone update speed improvements
because they are likely to result in considerable pressure to reduce
TTLs **throughout the DNS** for little to no good reason.

It will not be long before the marketeers will discover that they do not
deliver what they (implicitly) promise to customers in case of **changes
and removals** rather than just additions to a zone. 

Reducing TTLs across the board will be the obvious *soloution*. 

Yet, the DNS architecture is built around effective caching! 

Are we sure that the DNS as a whole will remain operational when
(not if) this happens in a significant way? 

Can we still mitigate that trend by education of marketeers and users? 

Daniel