Transports

Transports move data between different parts of the system – between message producers and message brokers, between message brokers and the entity database, and even between message brokers and external systems.

Supported transports

CAP supports several transport methods:

• RabbitMQ
• Kafka
• Azure Service Bus
• Amazon SQS
• NATS
• In-Memory Queue
• Redis Streams
• Apache Pulsar

Selecting a Transport

Feature	RabbitMQ	Kafka	Azure Service Bus	In-Memory
Use Case	Reliable message transmission	Real-time data processing	Cloud integration	Testing and development
Distributed	✔	✔	✔	❌
Persistence	✔	✔	✔	❌
Performance	Medium	High	Medium	High

For more comparisons:

• Azure Service Bus vs RabbitMQ
• Kafka vs RabbitMQ

Thanks to the community for contributing to CAP! The following transport extensions are community-supported:

• ActiveMQ (@Lukas Zhang): https://github.com/lukazh

• RedisMQ (@木木): https://github.com/difudotnet/CAP.RedisMQ.Extensions

• ZeroMQ (@maikebing): https://github.com/maikebing/CAP.Extensions

• MQTT (@john jiang): https://github.com/jinzaz/jinzaz.CAP.MQTT