Objects
Objects are basic units stored in OBS. An object contains both data and the metadata that describes data attributes. Data uploaded to OBS is stored in buckets as objects.
- A key that specifies the name of an object. An object key is a UTF-8 string up to 1,024 characters long. Each object is uniquely identified by a key within a bucket.
- Metadata that describes an object. The metadata is a set of key-value pairs that are assigned to objects stored in OBS. There are two types of metadata: system-defined metadata and custom metadata.
- System-defined metadata is automatically assigned by OBS for processing objects. Such metadata includes Date, Content-Length, Last-Modified, ETag, and more.
- You can specify custom metadata to describe the object when you upload an object to OBS.
- Data that refers to the content of an object.
Generally, objects are managed as files. However, OBS is an object-based storage service and there is no concept of files and folders. For easy data management, OBS provides a method to simulate folders. By adding a slash (/) to an object name, for example, test/123.jpg, you can specify test as a folder and 123.jpg as the name of a file in the test folder. The key of the object is test/123.jpg.
On OBS Console and OBS Browser+, you can use folders the same way you use them in a file system.
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