What are the benefits of CDN?

CDN, the abbreviation of content delivery networks, is a transparent backbone network responsible for Internet content delivery Many people don't know that we actually interact with CDN every day, such as when reading the content of news websites, shopping online, watching online videos, or browsing social media, CDN is indispensable This means that no matter what you do or consume, you will find the existence of CDN in the process of transferring every text character, every picture pixel and every movie frame to your computer and mobile browser To understand why CDNs are so widely used, we need to understand their benefits or functions It solves the problem of time delay, that is, the time delay between the request to load the web page and the content displayed on the screen The delay interval is affected by many factors, but in most cases, the delay duration is affected by the physical distance between the visitor and the website server The function of CDN is actually to shorten the physical distance, and the goal is to improve the rendering speed and performance of the website In order to shorten the distance between visitors and the website server, CDN stores its content cache version in multiple geographic locations (or nodes) Each node contains many cache servers, which are responsible for delivering content to neighboring visitors In general, CDN places your content in many places at the same time, providing better user coverage For example, users in Tianjin can access the website of the server in Guangzhou through the node in Tianjin, which can speed up the access speed Modern CDN can accomplish many it tasks It can bring us the following benefits: