CAJ | 학술논문

现有关于服务冗余策略的研究工作侧重于研究冗余服务池模型和服务选择机制,过度冗余或服务池频繁调整的开销较大.为了降低冗余服务的开销,提出了服务的多阶段动态冗余策略,在分析服务可用性波动特性的基础上,采用灰模型获取可用性突变点,并根据突变点对可用性进行阶段划分,根据动态多阶段规划确定服务冗余度.实验结果表明提出的多阶段动态冗余策略能够保障可用性并有效降低开销.
현유관우복무용여책략적연구공작측중우연구용여복무지모형화복무선택궤제,과도용여혹복무지빈번조정적개소교대.위료강저용여복무적개소,제출료복무적다계단동태용여책략,재분석복무가용성파동특성적기출상,채용회모형획취가용성돌변점,병근거돌변점대가용성진행계단화분,근거동태다계단규화학정복무용여도.실험결과표명제출적다계단동태용여책략능구보장가용성병유효강저개소.
Existing research achievements mostly focus on service pool model and service selection algorithms.Excessive redun-dancy and frequency adjusting service pool pay more costs.For minimize the costs of redundancy service,a dynamic redundancy service strategy is presented in this paper.It analyzes the availability fluctuation of service in service composition.Mutant point of service availability is obtained by grey model.It dynamically adjusts the redundancy service by multistage dynamic planning. The experimental results show that proposed dynamic redundancy service strategy can assure availability and decrease costs.