General questions

1. What objects is KS3 suitable for storing?

2. Does KS3 has storage capability limits?

3. Does KS3 have access traffic restrictions?

4. What is a bucket in KS3?

5. Does KS3 has a limit on the number of buckets?

6. In which regions is the KS3 service available?

7. Does KS3 support creating directories (folders)?

8. What error responses does KS3 provide?

9. Does KS3 have an SDK that supports WeChat applets?

10. How can I enable the CDN auto refresh function when using KS3 as the source site?

11. How can I get the AKs/SKs required for accessing KS3 from a program?

1. What objects is KS3 suitable for storing?

KS3 enables you to store the following types of objects safely at a very low cost:

• Static website resources, for example, pictures, music, video, and texts.
• Corporate data backup copies and history data such as logs.
• Backup copies of various large files for disaster tolerance.

2. Does KS3 has storage capability limits?

The overall storage capacity and the capacity of a single bucket are not limited. A single file (object) can be up to 50 TB.

3. Does KS3 have access traffic restrictions?

No. If your business traffic is greater than 1 Gbps, however, you are recommended to use the CDN service to improve service stability and access experience.

4. What is a bucket in KS3?

The KS3 object storage system is different from a file-level storage system that uses a hierarchical structure. The KS3 object storage system is flat. It has only one namespace, that is, buckets. Object addressing is achieved through unique object identifiers. You must create a bucket before you can store any objects.

5. Does KS3 has a limit on the number of buckets?

Yes. A single user can create a maximum of 50 buckets.

6. In which regions is the KS3 service available?

Currently, the KS3 service is available in Beijing (China), Shanghai (China), Hong Kong (China), Qingdao (China), Guangzhou (China), Russia, and Singapore. In addition, you can access the KS3 service from Beijing Financial Cloud, Shanghai Financial Cloud, and Beijing Government Cloud.

7. Does KS3 support creating directories (folders)?

Yes. You can use the API, SDK, or console to create directories. Although KS3 is not using a hierarchical structure, it supports creating directories. However, the directory/folder term is a virtual concept. The directory of an object is just the prefix of the key value of the object. For example, if you define an object whose key is test/, a folder is created. To create a new object in the folder, you only need to specify a key value that contains test/ for the object.

8. What error responses does KS3 provide?

When an error occurs during a user access, KS3 returns an error code and an error message for troubleshooting. The error code is an HTTP status code (3XX, 4XX, or 5XX). The error message is in application/XML format. For more information, see Error codes.

9. Does KS3 have an SDK that supports WeChat applets?

No. Currently, KS3 does not have an SDK that supports uploading and downloading data on WeChat applets.

10. How can I enable the CDN auto refresh function when using KS3 as the source site?

Log in to the CDN console to enable the function. For information about the procedure, see CDN auto refresh.

11. How can I get the AKs/SKs required for accessing KS3 from a program?

To access KS3 from a program, you must use the AKs/SKs issued by Kingsoft Cloud. You must log in to the console to create the keys yourself. For more information, see Activate the KS3 service.