group iteration的意思|示意

The model needs to include a mechanism for passing root objects to each iteration that can be used to store and retrieve objects that have a lifetime of Retain Thread Group or Retain Thread.

模型需要包含一种机制，将根对象传递给用于存储和检索生存期为Retain Thread Group或Retain Thread的对象的每个迭代。

We achieve this by setting up a new consumer on each iteration that selects based on the group identifier and sequence number that we require.

为此，我们将在每个迭代上设置一个新使用者，以根据组标识符和所需的序列号进行选择。

We reuse the same message object for each iteration and consequently, for the second get, it will contain the group identifier of the first message received.

我们将为每个迭代使用相同的消息对象，因此，对于第二个get，将包含所接收到的第一条消息的组标识符。