Kafka is not the simplest message broker on the market, especially with regards to the understanding of its inner workings. However, it is by far the most scalable and is message broker performative for the delivery of messages.

In the past, unlike ActiveMQ and RabbitMQ, Kafka was not sending transactional messages, which could be a problem in applications where losing any kind of information was a high cost. But in the most recent versions of Kafka this problem has been solved, and currently, there are transactional shipping options.

In Kafka, the numbers are really impressive. Some benchmarks indicate that Kafka supports, without difficulty, over 100,000 messages per second for each node.

Another strong point of Kafka is the ability to integrate with various other tools like Apache Spark. Kafka has good documentation. However, Kafka does not have a wide range of supported programming languages.

For cases where performance needs to reach high levels, Kafka is more than a suitable option.