Do I Need to Purchase an Outbound Internet Traffic Package If I Already Have a Pull Traffic Package?

A pull traffic package can be used for data that CDN downloads from OBS buckets when those OBS buckets are used as origin sites for CDN.

An outbound Internet traffic package can be used to cover the charges incurred by downloading data from OBS to a local device over the Internet.

The following explains which type of data traffic is used in different scenarios:

• Outbound internet traffic is generated when you download objects from or otherwise query buckets (for instance, listing objects and obtaining bucket or object metadata) on OBS Console. Using various software tools or SDKs to download objects over the Internet without CDN acceleration will also generate outbound internet traffic.
• Accessing a bucket through its access domain name generates outbound internet traffic.
• Suppose that you use an OBS bucket as the origin server of a CDN acceleration domain name, and set the origin server type to Domain name. Accessing that accelerated domain name generates outbound internet traffic, which is then billed by OBS and CDN, when the CDN cache is not hit.
• If the origin server type is set to OBS bucket, accessing the accelerated domain name consumes the quota of your OBS pull traffic package and counts as CDN traffic when the CDN cache is not hit.

If your application scenario involves a lot of data being transferred over the internet, outbound internet traffic packages are also recommended. If you do not expect to generate much outbound internet traffic, you can choose to not buy a package and pay for traffic on a pay-per-use basis.