Asking for suggestion and questions regarding the workings/internals of Libvirt

I am building a multi-tenant json REST API for managing KVM VMs but don't know if libvirt transactions are going to be fast enough to be invoked directly? or do i need a job queue? Does libvirtd already have a job queue that is used when handling time-consuming tasks like creating domain and such? If yes then what about tasks such as volUpload or download? Shashwat. shashwatshagun2581(a)gmail.com