How Java, librdkafka and MassTransit Kafka clients handle acks, offsets, threading and errors, and what those differences mean for production systems.

Kafka, Pulsar, RabbitMQ or NATS? A 2026 decision matrix for engineers, with each broker's strengths, Docker Compose try-outs and Java client examples.

Create a Kafka topic, change its retention policy with the command-line tools, and confirm messages are retained and deleted as expected.

This blog describes some of the main differences between Apache Kafka and Pulsar - two of the leading data streaming Apache projects.

Run Apache Pulsar as a standalone cluster to learn the basics, and explore its topic options following our Kafka and Pulsar comparison.