摘要：
In a previous blog post, we introduced exactly once semantics for Apache Kafka®. That post covered the various message delivery semantics, introduced 阅读全文
摘要：
import java.util.UUID; public class RanNum { /** * 生成随机数<br> * GUID： 即Globally Unique Identifier（全球唯一标识符） 也称作 UUID(Universally Unique * IDentifier) 。 阅读全文