what is dns cache

1: What is dns cache

DNS cache means that after normal access to the ip, the system will The IP is stored, and when accessed again, the system will directly extract and display the local DNS cache, which speeds up the resolution of the URL.

DNS records are stored in zone files and are used to convert domain names into IP addresses. They also include the server name of the domain name and mail server information, such as the commonly used "www" in front of the domain name. ”, these aliases will also be listed in the DNS records.

Since DNS records consist entirely of text, they can be modified if needed. However, a mistake may redirect the domain name to the wrong web server, which is why it is important to enter the DNS information accurately and double-check the changed entries before saving the zone file.

2: How to clear the dns cache

Use the cmd command to modify, open the run on the computer, enter cmd in the input box, click OK, enter ipconfig in the window /flushdns, press Enter to refresh the dns cache.

3: What are the benefits of eliminating DNS cache?

Many people suddenly cannot access the Internet. At this time, it may be The dns pointing is wrong. We just need to clear the dns cache and reassign the IP.

The above is a complete introduction to what dns caching is. If you want to know more about HTML video tutorial, please pay attention to the php Chinese website.

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