计算机科学 ›› 2017, Vol. 44 ›› Issue (7): 61-67.doi: 10.11896/j.issn.1002-137X.2017.07.011
• 2016 年全国理论计算机科学学术年会 • 上一篇 下一篇
杨娜,刘靖
YANG Na and LIU Jing
摘要: 云计算环境下,失效成为一种常态行为,可靠性保障能力不足不仅成为云计算应用推广的主要障碍,而且还促使云计算环境下的容错服务研究成为一个亟待解决的问题。针对目前云计算容错服务研究中存在的用户容错需求定义无法直接反映用户关心的可靠性问题,以及云容错服务供应商资源得不到灵活利用等问题,提出了一种融合容错需求和资源约束的云容错服务适配方法。从用户的角度,以组件为单位,基于可靠性对用户的容错需求进行定义。从云容错服务供应商的角度,分别在其资源充足和资源不足的情况下研究最佳的容错服务适配方法,并使用最优化理论求解该适配方法下的容错服务。实验结果表明,所提出的容错服务适配方法生成的容错服务能更好地满足用户和云容错服务供应商的需求。
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