What's the use of high defense DNS?

This article is to share with you about the use of high-defense DNS, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

1. Ensure that the website can be opened normally.

When visitors visit the website, they usually visit the website according to the domain name, so they usually need to resolve the domain name through the DNS server. If the DNS server does not function properly because of the DDoS attack, it means that your website cannot be accessed properly through the domain name. High-defense DNS can protect domain name resolution from DDoS attacks.

2. Parsing time can be allocated freely.

In fact, the DNS server can also be regarded as a cache of a website. For example, the website access of an American server will be slow, but if someone has visited it before, the information of the web page will be cached in the DNS server, which can accelerate the opening speed of the website. The DNS server is usually controlled by TTL. For the webmaster, the cache of the DNS server is a double-edged sword. If the domain name ip of the website needs to be re-resolved, if the resolution time does not exceed the time of TTL, it will be considered that the website cannot be opened normally either.

Summary:

Perhaps many webmasters consider the defense performance of the website, usually give priority to the server and rarely consider the defense performance of DNS, even if the probability of DNS server being attacked is relatively small, but for many websites, once the NDS server is attacked, it will also have a great impact on the site, so you can choose high-defense DNS according to the actual situation when building a site.

What is the function of high defense DNS? The above article is the full content of what is the role of high-defense DNS, high-defense DNS is of great value, once the website is attacked by hackers, high-defense DNS can resist attacks and protect our website from normal operation. I hope the above article will be helpful for you to choose a server.

The above is the use of high-defense DNS, the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.