Why does DNS cache matter & How to flush it?
Data exchange happens at a lightning pace. Every time you type a website address into your browser, it doesn’t immediately connect you to the requested website. Instead, a series of behind-the-scenes processes take place, one of which involves DNS (Domain Name System) resolution. DNS acts like a directory, translating human-readable domain names into IP addresses that computers can understand. But what role does DNS cache play in this process, why does it matter, and how can you flush it when necessary?
What is DNS Cache?
DNS cache is a mechanism employed by computers and networking devices to store recently accessed DNS information locally. When you visit a website for the first time, your computer sends a request to a DNS resolver to translate the domain name into an IP address. Once the resolver obtains the IP address, it stores it in its cache for future use. Next visits to the same website skip the DNS resolution process and directly access the IP address from the cache, speeding up the browsing experience.
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