11/19/2023 0 Comments Clear mac cache![]() ![]() That is when the DNS lookup process begins anew. When the TTL expires for a DNS record, an updated one has to propagate globally. The Time-to-Live (TTL) determines for how many seconds the DNS client can be caching a record. Then the computer’s OS stores the received resource records based on their TTL. Then, your OS is spawning a request for a DNS lookup.ĭuring the DNS lookup, the domain name is resolved to an IP address. How does it work?įundamentally, when you are accessing a website, your browser is asking your OS for the IP address. Without it, your OS would need to query the DNS server every time, which increases the DNS lookup latency. Thus, the DNS cache serves as an accelerator of the DNS lookup process. ![]() As this information is stored on a local level in your operating system (OS), the lookup will be completed faster. The DNS cache contains the history of the domain translations into IP addresses for websites you have previously visited from your computer. In this article, we will elaborate on what a DNS cache is, why you should clear it, and how to do that on your macOS. Therefore, you need to know how to flush the DNS cache on your MacOS. However, sometimes this may cause connectivity and security issues for you. Like every internet-connected device, your Mac stores a DNS cache. Its substantial purpose is to ensure fast and reliable web searches. ![]() Respectively, a DNS cache is a local catalog, which contains the records of a computer’s search requests history. The Domain Name System (DNS) is the distributed network of servers that systematizes domain names and their relevant Internet Protocol (IP) addresses.
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