If your business involves the distribution of large static web pages or application files, such as .apk game installation files, .rar application update files, patch files, and audio and video files, you can select the Large File Download business type to accelerate the distribution.

Scenarios

The Large File Download business type is suitable for accelerating the downloading and distribution of files that are greater than 20 MB. We recommend that you use Alibaba Cloud CDN together with Object Storage Service (OSS) to accelerate the back-to-origin process, which can reduce up to two-thirds of the back-to-origin bandwidth costs.

The following figure shows a typical architecture where Alibaba Cloud CDN is used to accelerate the downloading and distribution of large files.Architecture diagram

Issues resolved

  • End users cannot download files, or the download speed is too low.
  • Downloads are easily interrupted when the network environment is unstable. Repeated downloads of the same file consume additional resources each time.
  • Website content is insecure and easily hijacked.
  • File storage costs are too high, and performance requirements for the origin server are highly demanding.

Required Alibaba Cloud products and features

The following table lists Alibaba Cloud products and features required for the distribution of large files.
Product or feature Description
Object Storage Service (OSS) You can use Alibaba Cloud CDN with OSS to build an Alibaba Cloud ecosystem. The combination can reduce storage costs and back-to-origin bandwidth, and ensure the high availability of the origin server.
Resumable upload This feature allows resumable uploads through all kinds of protocols on the client side, saving outbound bandwidth.
HTTPS acceleration This feature supports various signing methods to prevent link hijacking.

Related operations

Before adding an accelerated domain name in the CDN console and selecting a service type, you need to learn about the application scenarios of different service types. For more information about specific operations, see Add a domain.