![]() The basic function of different cache types is all more or less the same. Keeping a local copy of a DNS lookup allows your OS or browser to quickly retrieve it and thus a website's URL can be resolved to its corresponding IP much more efficiently. What is DNS cache?ĭNS cache refers to the temporary storage of information about previous DNS lookups on a machine's OS or web browser. In this article, we'll further explain what DNS cache is as well as outline how to flush your DNS cache. Luckily, there is a mechanism in place to help reduce the frequency of which a website visitor's browser must request a complete DNS lookup. Needless to say, each additional check, adds extra time that the visitor must wait to receive a response. However, this process takes time since once a new website request is made, the client must ask the resolver, which asks the root server, which asks the TLD server, for information. Basically, a DNS server is used to resolve a particular domain to its IP equivalent. We've covered the topic of what a DNS server is in the past and explained how they work.
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