QUEUE MANAGEMENT METHOD, NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM AND QUEUE MANAGEMENT DEVICE

A queue management method including queuing, in a specific queue of a first virtual machine, one or more messages addressed to the specific queue, generating, when transferring management of the specific queue from the first virtual machine to a second virtual machine, a first queue and a second queue in the second virtual machine, queuing, in the generated first queue, the one or more messages that have been queued in the specific queue, queuing, after the second queue has been generated, a received message addressed to the specific queue in the second queue and performing, in response to an instruction to perform reference to or an operation for a specific message corresponding to the specific queue, reference to or an operation for the specific message in order of the first queue, the specific queue, and the second queue.