Overview

A Content Delivery Network (CDN) is a new layer of network architecture added to the existing Internet, composed of high-performance acceleration nodes distributed globally. These high-performance service nodes store your business content according to certain caching policies. When your users make a request for specific business content, the request is scheduled to the service node closest to the user, which directly responds quickly, effectively reducing user access latency and improving availability.
All CDN API interfaces introduced in this section are API 3.0 interfaces.
You can call APIs to perform CDN operations, such as creating acceleration domain names, modifying domain name configurations, data analysis, and purge and prefetch.
For all supported API information, please refer to API Overview.

Glossary

For common terms of the CDN API, see the table below:

Usage limits
For API parameter limits, refer to the parameter descriptions in each API document.

Getting Started with APIs

You can use the API Explorer tool to call APIs online.
This document uses a newly-added acceleration domain name as an example. The steps for making an API call via the API Explorer Tool are as follows:

1. Go to the API Explorer tool page. For more API Explorer tool usage information, see Using API Explorer.
2. Call AddCdnDomain to add a new acceleration domain name.
3. After adding a new acceleration domain name, you can view the added domain on the console page and subsequently configure a series of operations like acceleration strategies for the domain.