In the world of the Internet, the DNS (Domain Name System) plays an important role. It is responsible for translating the ** address that we enter into an IP address that the computer can understand, so that we can access the web page we want to browse. However, there are times when we may experience slow web pages, which can be largely due to DNS caching. So, how to clean DNS cache effectively? This article will provide you with a guide and tutorial on cleaning up your DNS cache.
We need to understand what DNS caching is. A DNS cache is a result that is temporarily stored by a computer or device when a domain name is resolved. When you access a ** for the first time, your device sends a request to the DNS server to query the IP address of that **. Once the DNS server returns the result, your device stores it in a local DNS cache. This way, when you access the same ** again, the device can get the IP address directly from the cache without having to make a request to the DNS server again. This can speed up the loading speed of web pages and improve the user experience.
There are also certain problems with DNS caching. If the IP address of a ** has changed, but your device still has the old IP address saved, then you will not be able to access it. In addition, some malicious** may exploit DNS caching to carry out attacks, such as DNS hijacking. Therefore, it is very necessary to clean the DNS cache regularly.
How to clean DNS cache effectively? Here are some commonly used methods:
1.Restart your network device.
The easiest way to do this is to restart your router, modem, or other network device. When you reboot these devices, they clear the DNS cache inside. While this method is simple, it may affect other devices that are using the network.
2.Change the TCP IP settings of your computer.
For Windows users, you can clean the DNS cache by modifying the TCP IP settings. Follow these steps:
Press the Win + R keys to open the "Run" dialog box;
Type "cmd" and press enter to open the command prompt window;
Enter ipconfig flushdns in the command prompt window and press enter to execute the command.
Wait for a while, and the command prompt window will say "DNS Resolver Cache Successfully Flushed".
For Mac users, you can clean up your DNS cache by following these steps:
Open the Terminal application;
Enter "sudo killall -hup mdnsresponder" and press enter to execute the command.
Enter your computer password;
After waiting for a while, the terminal will display "mdnsresponder: stop observer status", indicating that the DNS cache has been successfully refreshed.
3.Use third-party software to clean up the DNS cache.
Aside from cleaning your DNS cache manually, there are some third-party software that you can use to help you with this task.