Abstract: A message system may use publish-subscribe techniques to process messages for several applications. In situations where an application requires an output, it may need to wait for a response message back from a service via the message system. However, in certain implementations, the message system may not be able to determine that a particular message involves request-response communication. The efficient response communication techniques described herein receive the response message having a routing key and a payload including a correlation identifier and then generate a second response having a routing key that includes the correlation identifier. This message may then be efficiently routed to an application based on the correlation identifier.

Abstract: A message system may use publish-subscribe techniques to process messages for several applications. In situations where an application requires an output, it may need to wait for a response message back from a service via the message system. However, in certain implementations, the message system may not be able to determine that a particular message involves request-response communication. The efficient response communication techniques described herein receive the response message having a routing key and a payload including a correlation identifier and then generate a second response having a routing key that includes the correlation identifier. This message may then be efficiently routed to an application based on the correlation identifier.