DNS is a server used to resolve the backend IP of domain names. Linux, like Windows, has customizable DNS addresses that are very easy to modify. When using Linux as a website server and running Wordpress queries slowly, you can try modifying a fast DNS server to solve the above problems.
Change here to Google DNS server (modify to the DNS server address you want to modify according to the actual situation)
1、 Modify configuration file
vi /etc/resolv.conf
2、 Modify according to format
nameserver 8.8.4.4
nameserver 8.8.8.8
Modify to Google's Domain Name System IP in the above format and save to take effect.
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