Glossary · Web & App Development
RabbitMQ
Overview
What RabbitMQ is
RabbitMQ is a widely used open-source message broker that lets applications and services communicate asynchronously. A producer sends a message, RabbitMQ holds it in a queue, and a consumer processes it when ready, so the two sides never need to be online at the same time. It primarily speaks the AMQP protocol and also supports MQTT and STOMP.
How it works
Producers publish messages to an exchange, which routes them to one or more queues based on bindings and routing keys. This gives you routing patterns like direct, topic, and fanout. Consumers acknowledge messages once handled, and features such as durable queues, retries, and dead-letter queues keep work from being lost when something fails.
Why it matters for your business
RabbitMQ decouples parts of an application so slow or spiky work, such as sending email, processing uploads, or syncing systems, runs in the background without blocking users. In backend and API development, a full-service team uses it to distribute tasks across workers and to keep microservices loosely coupled and resilient.
Where we use it
Related Zen in Tech services
How our team puts RabbitMQ to work in real projects.
FAQ
RabbitMQ — common questions
RabbitMQ vs Kafka, which should I use?
RabbitMQ is a message broker built for flexible routing and reliable task delivery; Kafka is an event-streaming log built for high-throughput, replayable streams. RabbitMQ fits task queues and RPC-style messaging, while Kafka fits event streaming and analytics.
Is RabbitMQ free?
Yes. RabbitMQ is open source under the Mozilla Public License and free to self-host, with commercial support available through Broadcom (VMware).
When do I need a message broker like RabbitMQ?
When you need reliable background processing, want to smooth out traffic spikes, or need to decouple services so one slow component doesn't block the rest of the app.
Need RabbitMQ done right?
Book a free consultation and we’ll map the fastest, most cost-effective path for your project.
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