Apache Kafka:Java Producer的可重用性
问题描述：
有人知道
kafka.javaapi.producer.Producer
kafka.javaapi.producer.Producer
可以在多个方法调用之间重用(例如，多个send(...))，还是应该每次关闭它?
can be reused among several method invocations (e.g. several send(...)) or it should be closed each time?
答
是的，它肯定可以重用.创建Producer的操作相当缓慢，因为它需要建立与所有分区(可能还有zookeeper)的连接.因此，在可能的情况下应该重新使用生产者.
Yes, it can surely be reused. Producer creation is pretty slow operation because it requires establishing connection to all partitions (and probably zookeeper). So, Producers should be reused when possible.