CDN should pay attention to the CDN acceleration service provided by the regular provider to avoid the websites from being often attacked by the virus, resulting in inaccessible access. Do not set the specified independent IP for search engines to avoid the best acceleration route that causes CDN acceleration. When analyzing the CNAME domain name, add a point behind the address to avoid being unable to use the CDN website to accelerate.

　　1. Choose a safe and reliable CDN

　　There are also some free CDN acceleration services on the market. Many webmasters were attracted by them and bought their free CDN. However, their websites are often attacked by viruses, causing no access. The last reason is that the CDN acceleration is not safe, there are many vulnerabilities, or their own CDN acceleration system has viruses. In order to ensure the security of your website, it is recommended to choose the CDN acceleration provided by regular providers.

　　2. Do not set the independent IP for the search engine

　　Friends who have used CDN acceleration should know that after using CDN acceleration, a large number of IP addresses will appear on your website. Therefore, some webmasters are worried that search engines cannot correctly identify the real IP of the website, resulting in a decline in website ranking. Therefore, it provides an independent IP that makes the search engine point out a real website, but this makes CDN unable to play, and CDN acceleration cannot give the best acceleration route.

　　3. When parsing the cname domain name, please add a point after the address

　　When adding CDN acceleration to the website, whether it is the acceleration of the entire website, or the acceleration of individual pictures, JS, CSS, etc., we need to add another point to resolve the domain name CNAME to the address of the CDN website acceleration service provider, otherwise We cannot use the CDN website to accelerate, the domain name analysis error, and the website cannot be opened.