It can also simply become outdated or create internet connectivity issues. Unfortunately, your DNS cache may become corrupted, leading you into phishing schemes. This enables your browser to reload sites you’ve visited in the past more quickly than if it had to reference the DNS again each time. So, DNS caching involves your Operating System (OS) or browser capturing recently-visited IP addresses and saving them in a database. As for ‘caching’, it’s the process of saving a snapshot of something (such as a web page) so it can be reloaded faster in the future. You can think of it as a directory or phone book for websites. In order to understand why you may need to flush your DNS cache, there are several components we need to break down.įirst, the Domain Name System (DNS) is an index of all the websites on the internet and their IP addresses.
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