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Exchange Bindings

Bindings connect RabbitMQ entities together.

ServiceBus.Core models these relationships through descriptors.

graph LR

    Exchange --> Queue

The simplest binding connects an exchange directly to a queue.

Exchange To Queue

graph LR

    OrdersExchange --> OrdersQueue

This is the most common topology.

Typical use cases:

  • business events;
  • command processing;
  • workflow execution.

Exchange To Multiple Queues

graph LR

    OrdersExchange --> ERPQueue

    OrdersExchange --> CRMQueue

    OrdersExchange --> AuditQueue

Useful when multiple systems need to receive the same message.

Exchange To Exchange

graph LR

    OrdersExchange --> IntegrationExchange

    IntegrationExchange --> OrdersQueue

This pattern enables topology composition and message distribution.

Exchange Chains

graph LR

    ExchangeA --> ExchangeB

    ExchangeB --> ExchangeC

    ExchangeC --> Queue

Exchange chains are particularly useful in integration platforms where routing concerns are separated from business concerns.

Descriptor Representation

These relationships are typically represented through:

  • ExchangeDescriptor
  • QueueDescriptor
  • ExchangeBoundDescriptor
  • QueueBoundDescriptor
  • BinderDescriptor

The Reference section documents these descriptors in detail.