Time To Live, i.e., TTL is configured time in seconds which decides the DNS cache expiry. For example, you have a domain knownhost.com, and A record TTL is configured as 14400 (14,400 seconds), it has an initial A Record 1.1.1.1. Suppose you updated the A record for the domain name knownhost.com with 2.2.2.2. Due to […]