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SpotVista is introduced as a system that recommends reliable and cost-efficient multi-node spot instance configurations by leveraging public cloud availability datasets, addressing the limitations of prior work focused on single-node instances. It overcomes query limitations to collect a large-scale multi-node availability dataset and analyzes multi-node spot instance behavior to establish a recommendation methodology. Experimental results show SpotVista achieves significantly greater availability (81.28% vs SpotVerse, 21.6% vs AWS SpotFleet) and cost savings (2.84% vs SpotVerse, 26.3% vs AWS SpotFleet) compared to existing solutions.
Multi-node spot instance configurations recommended by SpotVista offer 81% greater availability and 26% more cost savings than current state-of-the-art and publicly available services.
Cloud vendors offer discounted spot instances to maximize surplus resource utilization, but these instances are subject to the risk of sudden interruption. Traditional pricing datasets have been employed to predict this risk, yet recent policy changes by cloud vendors have diminished their effectiveness. To promote spot instance usage, public cloud vendors provide instant availability datasets to help users mitigate interruption risks. While existing research utilizing this data has proposed methods to reduce interruptions, these studies have primarily focused on single-node instances, overlooking the stability of multi-node environments widely adopted for modern cloud workloads. This paper proposes SpotVista, a system that recommends a resource pool of reliable and cost-efficient multi-node spot instances by leveraging various publicly available datasets. To achieve this, SpotVista collects a large-scale multi-node availability dataset while overcoming significant query limitations. Through a thorough analysis of multi-node spot instance availability behavior, SpotVista establishes a methodology for recommending cost-efficient and reliable multi-node configurations. To evaluate how effectively the proposed methodology reflects multi-node availability and cost efficiency, extensive real-world interruption experiments were conducted. The results demonstrate that SpotVista outperforms the state-of-the-art work, SpotVerse, achieving 81.28% greater availability and 2.84\% more cost savings in a multi-region setup. When compared to a publicly available service, AWS SpotFleet, SpotVista provides 21.6\% higher stability and 26.3% greater cost savings.
