Videos are an increasingly utilized part of the experience of the billions of people that use Facebook. These videos must be uploaded and processed before they can be shared and downloaded. Uploading and processing videos at our scale, and across our many applications, brings three key requirements: low latency to support interactive applications; a flexible programming model for application developers that is simple to program, enables efficient processing, and improves reliability; and robustness to faults and overload. This paper describes the evolution from our initial monolithic encoding script (MES) system to our current Streaming Video Engine (SVE) that overcomes each of the challenges. SVE has been in production since the fall of 2015, provides lower latency than MES, supports many diverse video applications, and has proven to be reliable despite faults and overload.

Peer-to-Peer (P2P) systems have witnessed an explosive growth in popularity due to their desirable characteristics (robustness, scalability, availability). In this paper, we present an approach to bring these characteristics into the control plane of IP networks, which mainly relies on signaling protocols such as SIP to setup multimedia and instant messaging sessions. We present a structured P2P control plane based on modifications to the original Chord P2P topology, resulting in a hierarchical overlay of SIP peers that replaces traditional client-server paradigms in control plane signaling protocols. Implementations were used to study the performance of the proposed structured P2P control plane, and its suitability for use in IP networks.

Data and telephone service providers have started considering migration to an IP based environment. This paper presents an unstructured peer-to-peer approach to initiating and maintaining sessions over IP using session initiation protocol (SIP). The offered solution is completely modular and is compatible with traditional server-client based approaches using SIP. The peer-to-peer nature of our design allows it to be highly scalable and self managing with low maintenance costs, making it an attractive solution for service providers