RabbitMQ: fast producer and slow consumer

Question

I have an application that uses RabbitMQ as the message queue to send/receive message between two components: sender and receiver. The sender sends message in a very fast way. T

Answer 1

As answer I suggest: both.

You can take advantage from having multiple receiver, as well as setting up each receiver to execute the task in a separate Thread, thus permitting to the receiver to accept the next message in queue.

Of course this approach assumes that the result of each operation (the writing on the db, if I understood correctly) does not influence in any way the result of the subsequent operations in response from other messages.