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2014 IEEE 38th Annual Computer Software and Applications Conference (COMPSAC) (2014)
Vasteras, Sweden
July 21, 2014 to July 25, 2014
ISSN: 0730-3157
ISBN: 978-1-4799-3575-8
pp: 139-148
As multi-tenant applications spring up in clouds, more and more people advocate using Service Level Agreement (SLA) in service delivery to fit tenants' non-functional needs e.g. Response time and budget limit. However, most of the present application optimizations based on SLA focuses on virtual machine-based (VM-based) computing service, while other services such as storage and cache are often neglected. In this paper, we propose an SLA-driven application optimization for cache service to help to meet tenants' needs better and improve cost-effectiveness, which can be taken as complementary to the existing work. The proposed approach, built on top of Platform-as-a-Service (PaaS), pays attention to evicted data. It considers both tenant SLA-evaluated status and data performance when weighting the evicted data with re-cache likelihoods, and then adjusts their re-cache priorities. At the beginning of every cycle it predicts tenant status and evicted data performance for the coming cycle by Holt-Winters double exponential smoothing. Our simulation experiments demonstrate the optimization effectiveness in improving cache cost-effectiveness and satisfying tenant SLAs.
Optimization, Time factors, Resource management, Market research, Smoothing methods, Data models, Databases

H. He, Z. Ma, H. Chen, D. Wu, H. Liu and W. Shao, "An SLA-Driven Cache Optimization Approach for Multi-tenant Application on PaaS," 2014 IEEE 38th Annual Computer Software and Applications Conference (COMPSAC), Vasteras, Sweden, 2014, pp. 139-148.
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