Use Cases

For copying an object greater than 5 GB, you must use the multipart copy. Use the multipart upload API to create an object, and use the Upload Part - Copy API to carry the x-cos-copy-source header to specify the source object. The process is as follows:

1. Initialize an object for multipart upload.
2. Copy the data of the source object. You can specify the x-cos-copy-source-range header and copy up to 5 GB of data at a time.
3. Complete the multipart upload.

SDKs provided by COS can be used to easily implement multipart copy.

Directions

Via REST API

You can use the REST API directly to initiate a multipart copy request. For more information, see the following API documentations:

• Initiate Multipart Upload
• Upload Part - Copy
• Complete Multipart Upload
• Abort Multipart Upload

Via the SDK

You can call the multipart copy method in the SDK directly. For more information, see the SDK documentation for the corresponding programming language below:

• SDK for Android
• SDK for C++
• SDK for iOS
• SDK for Java
• SDK for JavaScript
• SDK for Node.js
• SDK for PHP
• SDK for Python