So in the event you form wwwwwww dot a thing and afterwards wwww dot something, the second query could very well be answered with an extremely fast “no” (NXDOMAIN in the DNS planet). Aggressive negative caching is effective only with DNSSEC signed zones, which includes each the root in https://office365smtpsetup01111.diowebhost.com/81614163/the-smart-trick-of-magento-2-optimization-that-no-one-is-discussing