A join operation merges two streams based on the keys of their data records, and yields a new stream. A join over record streams usually needs to be performed on a windowing basis because otherwise the number of records that must be maintained for performing the join may grow indefinitely.
序 本文主要简单梳理梳理java应用中生产/消费kafka消息的一些使用选择。 可用类库 kafka client spring for apache kafka spring integration kafka spring cloud stream binder kafka 除了官方的java api类库外,spring生态中又额外包装了很多,这里一一简单介绍下。 spring for apache kafka 基于java版的kafka client...
可以看到跟0.8版本的不一样,不需要topicCountMap了This client transparently handles the failure of Kafka brokers, and transparently adapts as topic partitions it fetches migrate within the cluster.The consumer is not thread-safe.