DNS Cache (TTL)
DNS caching is the temporary storage of DNS query results, controlled by a Time-To-Live (TTL) value measured in seconds. Caching reduces DNS lookup times and network traffic by reusing recent query results instead of performing fresh lookups for every request.
Example
A TTL of 3600 means DNS resolvers will cache the record for 1 hour before querying the authoritative server again.
Referenced in Guides
DNS Configuration