topics / async-messaging
RabbitMQ vs Kafka
Smart broker vs. dumb log — not a benchmark, a difference in what each one actually does at runtime. Watch the same published event get pushed to a worker and deleted on ack on one side, while it sits in a log getting pulled by independent consumer groups on the other. Then use Match to score a workload's traits, or Study for the full scenario-by-scenario reasoning.
Shared event stream
Every event published here happens on both sides at once — same event, different fate.
RabbitMQ — push
The broker hands each queued event to the first free worker. Once a worker acksit, it's deleted — for good.
Kafka — pull
Nothing here is ever deleted by a read. A new group starts from the oldest event still in the log — try adding one mid-run.