ping dom
So you can have realistic information, but in subsequent russian numbers tests the tool keeps this value in cache so the results could be excessively favorable. Do not forget that Gtmetrix also allows you to monitor DNS times in waterfall , all the advanced tools for measuring web page loading time offer this data. But how to optimize it?
Good hosting is the starting point for achieving noteworthy results. However, to improve DNS times we must pay more attention to the possibility of eliminating useless requests .
Running your website on Pingdom allows you to work on this very point: identify what is not needed and eliminate it to streamline the number of requests. Or to lighten the load of what is holding back value. In these cases, for example, a good CDN can be particularly useful .
One of the most interesting tricks to speed up the website after a DNS speed test that reveals certain flaws: DNS Prefetch . This step allows you to resolve domain names before the resources are requested in order to gain a good amount of time.