SQS ReceiveMessage 中的“MessageAttributeName.N”和“AttributeName.N”有什么区别

Question

SQS“ReceiveMessage”端点有两个参数，它们似乎做同样的事情，但我不理解 API 文档。有人可以解释一下区别吗：

https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ReceiveMessage.html

AttributeName.N
A list of attributes that need to be returned along with each message

MessageAttributeName.N
The name of the message attribute, where N is the index.
...
When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All

看起来它们都做同样的事情，即指定在获取的消息上应返回哪些属性。有什么区别吗？如果不是，哪个是首选？

Answer 1

我现在明白了：

AttributeName返回 AWS 的属性，例如“ApproximateFirstReceiveTimestamp”

MessageAttributeName返回消息（用户指定）属性