Whatever the reason, all major operating systems allow you to force the process of clearing this cache - or “flushing DNS.” The DNS cache can also impact your ability to connect to the internet or cause other issues. The problem is that sometimes dangerous IP addresses or corrupted results can be cached and need to be removed. Then, the next time I type in that website address, the browser will look for its DNS information in the local cache first and be able to find the site more quickly. Once it has that information, the browser can store it in its local cache. This can help resolve security, internet connectivity, and other issues.įor example, when I type in in my browser’s address bar for the first time, the browser has to ask DNS servers where to find the site. What does flush DNS do?įlushing DNS will clear any IP addresses or other DNS records from your cache. This reduces server response times, making the site load more quickly. The DNS cache prevents browsers from having to make a new request so that, instead, it can use stored information to load the website. By default, most operating systems will cache IP addresses and other Domain Name System (DNS) records in order to fulfill future requests more quickly. After your browser receives the IP address, it can then load the correct website in your window.īut what happens when you try to access the website a second time? Does the browser have to make a whole new request to the DNS server? When you input an URL into your browser, your browser sends a request to the DNS server asking for the URL’s IP address. In this post, we’ll cover everything you need to know about flush DNS, including:Ī DNS (Domain Name System) cache is a record of all queries made to a DNS server from your browser.
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