Sentinel: Scheduling Live Streams with Proactive Anomaly Detection in Crowdsourced Cloud-Edge Platforms

TL;DR

Sentinel is a proactive scheduling framework for crowdsourced cloud-edge platforms that detects anomalies early, reducing disruptions, boosting revenue, and increasing scheduling efficiency in live streaming services.

Contribution

The paper introduces Sentinel, a novel two-stage anomaly detection and scheduling framework tailored for unstable CCPs, enhancing performance and reliability.

Findings

Reduces anomaly frequency by 70%

Improves revenue by 74%

Doubles scheduling speed

Abstract

With the rapid growth of live streaming services, Crowdsourced Cloud-edge service Platforms (CCPs) are playing an increasingly important role in meeting the increasing demand. Although stream scheduling plays a critical role in optimizing CCPs' revenue, most optimization strategies struggle to achieve practical results due to various anomalies in unstable CCPs. Additionally, the substantial scale of CCPs magnifies the difficulties of anomaly detection in time-sensitive scheduling. To tackle these challenges, this paper proposes Sentinel, a proactive anomaly detection-based scheduling framework. Sentinel models the scheduling process as a two-stage Pre-Post-Scheduling paradigm: in the pre-scheduling stage, Sentinel conducts anomaly detection and constructs a strategy pool; in the post-scheduling stage, upon request arrival, it triggers an appropriate scheduling based on a pre-generated strategy to implement the scheduling process. Extensive experiments on realistic datasets show that Sentinel significantly reduces anomaly frequency by 70%, improves revenue by 74%, and doubles the scheduling speed.