Therefore, after clearing the cache, you will start fetching data from the new DNS. After clearing the cache, these entries are deleted, except that they are updated automatically, for example, antivirus or email clients.Īny invalid IP addresses in the cache will be cleared by flushing the DNS and your browser will retrieve the correct IP record.Įven after changing DNS, if your cache contains frequently viewed websites, the browser will fetch information from the old cache and not the new service. Even more so there is a specific command ("ipconfig / displaydns") on the command line that displays every entry in your cache. There are several advantages of flush dns, which we will discuss in more detail:Īnyone using your computer can view your DNS cache and find out which websites you have visited. when you have malware that tries to redirect normal pages to malicious sites.when the site you are visiting has changed the server and is no longer at the cached address. However, there are several reasons for flushing your DNS, including for the privacy of your browsing history and for helping you troubleshoot certain errors. This way, the DNS cache stores the IP addresses of every website you visit. That is, it forces the computer to go to sites you have already visited without having to query the DNS server every time. To make this process instantaneous, your computer stores some of these visits for easy access later. It looks for this address on a DNS server, which matches it with the IP address of your computer to visit. So you enter a website into the address bar, but your computer doesn't really know where to go next. Let's first figure out what the Domain Name System (DNS) is and, in general, whether it needs to be flushed.
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