Shulou(Shulou.com)06/03 Report--

After purchasing the CDN service, users will be more concerned about the actual effect in the process of using it. First of all, make sure that it has been activated successfully, and then follow the basic steps to add accelerated domain names and configure CNAME. After all, you can test whether the CDN acceleration is successful. What is the principle of CDN acceleration and what is its technical driver? the following describes the principle of its technical driver.

What is the detailed explanation of cdn technology? Cdn technical services were originally used to ensure fast and reliable distribution of static content that can be cached and is best suited for storage and distribution in high-speed networks. The key technical elements are:

1) content release

It publishes or delivers content to the nearest remote service point by means of indexing, caching, stream splitting, multicast and other technologies.

2) content routing

It is an integrated network load balancing technology, which balances users' requests on multiple remote POP through the redirect (DNS) mechanism in the content router, so that users' requests can get the fastest response from content sources.

3) content exchange

According to the availability of the content, the availability of the server and the background of the user, it intelligently balances the load and traffic on the cache server of POP by using the technologies of application layer switching, stream splitting, redirection (ICP, WCCP), etc.

4) performance management

Through internal and external monitoring systems, it obtains the status information of network components and measures the end-to-end performance of content distribution (such as packet loss, delay, average bandwidth, startup time, frame rate, etc.) to ensure that the network is in the best running state.

CDN can cover almost all domestic lines. In terms of reliability, CDN achieves multi-point redundancy in structure, even if one node fails unexpectedly, the visit to the website can be automatically directed to other healthy nodes to respond.

CDN can easily implement the national deployment of the website, without considering server hosting and investment, the cost of additional bandwidth, mirror synchronization of multiple servers, and more management and maintenance technicians.

The above is a detailed introduction to cdn technology.

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