This rule contains a fetch action and three transformation actions that implement your routing logic.
此规则包含一个获取操作和三个转换操作，这些操作将实现您的路由逻辑。
2
You will be glad to know that the index you just created can be used in any of the approaches described in this article to fetch data from the database into the business logic.
对于本文描述的把数据库数据提取到业务逻辑中的所有方式，都可以使用刚才创建的索引。
3
When the SHIP buffer is empty, the SHIP logic sends another 'Fetch' request to the "US" server to get the next block of data.
当ship缓冲区为空时，SHIP逻辑将另一个' Fetch '请求发送到“ US ”服务器，以便获取下一块数据。