Exploring the metadata for a domain and costs

Every call made to SimpleDB, irrespective of whether the operation works on a domain or an item, always returns two specific values associated with it. These values are automatically provided within the response. They exist for all operations, and for every invocation of the operation in SimpleDB:

• RequestId: A unique ID for tracking the request made to SimpleDB. This is also very useful for debugging purposes. If you are having any issues with your calls to SimpleDB and are unable to determine the cause or reason from your side, this is the ID that you need to give AWS as a part of the debug information to facilitate tracing the request.

• BoxUsage: SimpleDB measures the machine utilization of each request and charges the customer based on the amount of machine capacity used to complete the particular request (SELECT, GET, PUT, and so on), normalized to the hourly capacity of a circa 2007 1.7 GHz Xeon processor. This measure is named as BoxUsage...