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Object

An object consists of data and its descriptive metadata.

Contents​

ETag

The entity tag is a hash of the object. The ETag reflects changes only to the contents of an object, not its metadata. The ETag may or may not be an MD5 digest of the object data. Whether or not it is depends on how the object was created and how it is encrypted as described below:

  • Objects created by the PUT Object have ETags that are an MD5 digest of their object data.
  • If an object is created by the Multipart Upload, the ETag is not an MD5 digest, regardless of the method of encryption. If an object is larger than 16 MB, the Astran Explorer will upload or copy that object as a Multipart Upload, and therefore the ETag will not be an MD5 digest.

Type: String

Required: No

Key

The name that you assign to an object. You use the object key to retrieve the object.

Type: String

Length Constraints: Minimum length of 1.

Required: No

LastModified

Creation date of the object.

Type: Timestamp

Required: No

Size

Size in bytes of the object

Type: Long

Required: No