I am new in kafka. My requirement is, I have two partition for example Partition-0 and Partition-1 and I have list of values which also contains KEY value. I want to store data according to my key like key-1 will goes to Partition-0, key-2 will goes to Partition-1. With old API there is way to achieve like we need to implement Partition interface but how I can do this with new API. thank you
With the new producer you may also implement Partitioner interface (https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/producer/Partitioner.java) to achieve round-robin distribution.
You can use DefaultPartitioner for reference - https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/producer/internals/DefaultPartitioner.java