BCS 450 Lecture Notes - Lecture 2: Configuration Management Database, Amazon Elastic Compute Cloud, Amazon S3
Document Summary
Objects consists of: key (name of the object, value (data, version id, metadata (data about data, subresources, acl, torrent. It does take some time for object updates to be propagated. Amazon s3 ensures high availability by duplicating data across many servers located within aws data centers. Put response, any read (get or list) will return the data sent by the put. Here are some instances of this type of behavior: a process uploads a new object to amazon s3 and instantly lists the keys in its bucket. The new object will be added to the list: a process substitutes an existing object and attempts to read it right away. The updated data will be returned via amazon s3: a procedure deletes an existing object and then attempts to read it right away. Because the item has been removed, amazon s3 will not return any data: a procedure deletes an existing object and then lists the keys in its bucket.
