Getting to Know CDN
This section gives a brief introduction about CDN.
What Is CDN?
Content Delivery Network (CDN) is an intelligent virtual network built on top of existing Internet infrastructure. Using CDN, origin content can be cached on nodes closer to users so content can load faster. CDN speeds up site response and improves site availability, breaking through the bottlenecks caused by low bandwidth, heavy user access traffic, and uneven distribution of edge nodes.
HUAWEI CLOUD CDN has over 2000 edge nodes in the Chinese mainland and over 800 edge nodes outside the Chinese mainland. The network-wide bandwidth is at least 150 Tbit/s. The edge nodes are connected to the networks of top carriers in China such as China Telecom, China Unicom, China Mobile, and China Education and Research Network (CERNET), as well as many small- and medium-sized carriers. Up to now, HUAWEI CLOUD CDN covers more than 130 countries and regions, connecting to over 1600 carrier networks. CDN precisely schedules user requests to the most appropriate edge nodes, providing efficient and reliable acceleration.
HUAWEI CLOUD CDN can be used for:
| Scenario | Description |
|---|---|
| Website acceleration | CDN is perfect for web portals, e-commerce platforms, news apps, and user generated content (UGC)-focused apps. It provides excellent acceleration for static content associated with acceleration domain names. In addition, it supports custom cache policies. Users can set the maximum cache age as needed. The files that can be cached include but are not limited to .zip, .exe, .wmv, .gif, .png, .bmp, .wma, .rar, .jpeg, and .jpg. |
| Download acceleration | CDN is useful for download clients, game clients, app stores, and websites that provide download services based on HTTP or HTTPS. An increasing number of new services, such as apps and mobile games, require software updates in real time. Conventional download services need to provide even more and larger downloads. If origin servers have to handle all of these requests directly, it places tremendous strain on these servers and results in a significant bottleneck. With CDN download acceleration, content to be downloaded is distributed to edge nodes, easing the pressure on origin servers and ensuring high-speed downloads. |
| On-demand service acceleration | If you provide on-demand audiovisual services, CDN is a must. On-demand services include online education, video sharing, music or video on demand, and other audiovisual content. Conventional on-demand audiovisual content puts significant load on the servers and consumes an enormous amount of bandwidth. When this happens, user experience is compromised for low-speed services. CDN ensures fast, reliable, secure acceleration for such services by delivering content to all CDN nodes. Users are then able to obtain that content from nearby nodes anywhere and anytime. |
| Whole site acceleration | CDN is a good option for websites that consist of both dynamic and static content and for sites that involve a large number of ASP, JSP, or PHP requests. Whole site acceleration accelerates both dynamic and static content. Static content can be served from nearby nodes, whereas dynamic content is retrieved from the origin server through the fastest possible route. As such, dynamic pages can be loaded more quickly by bypassing congested routes. |
HUAWEI CLOUD CDN Billing
You can choose to be billed by traffic or bandwidth. For details, see Pricing Details.
- By Traffic
If you choose traffic-based billing:
- You can be billed by the traffic used per hour.
- You can buy a CDN traffic package, which is more economical.
- By Bandwidth
Billing by bandwidth has three options: by peak bandwidth, by 95th percentile bandwidth, and by daily average peak bandwidth.
Billing by 95th percentile bandwidth and by daily average peak bandwidth are only available for customers who have a budget of more than ¥100,000 for CDN each month. If you are this type of customers, submit a service ticket or contact customer service to apply for it.
Next Article: Getting Started with CDN
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