Java Producer with Keys

The video tutorial explains how to use keys in producer records for Kafka. It covers defining keys, ensuring they map to the same partition, and the importance of this for data ordering. The tutorial also discusses making sends synchronous for demonstration purposes, though it's not recommended for production. Common questions about partitioning and best practices are addressed, emphasizing the need for multiple partitions to ensure proper key distribution.

How can you ensure that the same key always goes to the same partition?

What happens if you produce to a topic with only one partition?

What are the implications of having a different number of partitions in a topic?