Kaleidoscope: Real-time content delivery in software defined infrastructures

Real-time content delivery services such as live media streaming, news casting and real-time event subscription/publication systems have become popular in recent years. Unlike traditional content delivery applications, real-time content delivery requires live content to be processed and delivered to end users in a timely and efficient manner. Furthermore, as both content producers and consumers may change over-time, it is a challenge to provision resources for these applications to achieve high service quality while minimizing total operational costs. Fortunately, the recent development of Cloud computing and Software Defined Networking (SDN) enables efficient implementation of real-time content delivery systems. Recently, the concept of Software Defined Infrastructure aims at combining Cloud computing and SDN to provide an unified framework for application deployment and management. In this paper, we present Kaleidoscope, an architecture for real-time content delivery in Software Defined Infrastructures. Kaleidoscope leverages network virtualization, SDN-based broadcasting and dynamic cloud resource provisioning to achieve high resource efficiency and service performance. Specifically, we present a resource management scheme that controls Cloud resource allocation and network configuration at run-time in accordance with service demand. Experiments show that Kaleidoscope is able to achieve lower resource cost while providing high service quality.