
How to Choose DNS TTL Values


Giovane Moura
Based in Arnhem, The Netherlands
Giovane is a Data Scientist with SIDN Labs (.nl registry) and a Assistant Professor at TU Delft, in the Netherlands. He works on security and Internet measurements research projects. You can reach him at http://giovane-moura.nl/ More
• 10 min read
There is no consensus on how to choose DNS time-to-live (TTL) values for domain names. Yet, TTLs are incredibly important, given that they indirectly control how long resolvers cache records, directly influencing user experience.