- May 13, 2017
- 2,512
Thanks for asking, I had to google it and it seems, that zero would be the best option, from the privacy perspective, since TTL = DNS Cache.Which one is better for DNS? Lower TTL or Higher TTL?
All DNS records have a TTL (Time To Live) property, specifying the maximum amount of time other DNS servers and applications may cache the record.
Setting a DNS record's TTL value to zero, means that applications and DNS servers must not cache the record.
When a DNS record is stored in the cache of a DNS server, the record's TTL is continuously reduced as time go by, and when the TTL finally reaches zero the record is removed from the cache.