• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

A Dynamic QoS Adjustment Enabled and Load-balancing-aware Service Composition Method for Multiple Requests

Vol. 15, No. 3, March 31, 2021
10.3837/tiis.2021.03.005, Download Paper (Free):

Abstract

Previous QoS-aware service composition methods mainly focus on how to generate composite service with the optimal QoS efficiently for a single request. However, in the real application scenarios, there are multiple service requests and multiple service providers. It is more important to compose services with suboptimal QoS and maintain the load balance between services. To solve this problem, in this paper, we propose a service composition method, named as dynamically change and balancing composition method (DCBC). It assumes that the QoS of service is not static, and the services can adjust the value of QoS to gain more opportunities to be selected for composition. The method mainly includes two steps, which are the preprocessing step and the service selection step. In the preprocessing step, a backward global best QoS calculation is performed which regarding the static and dynamic QoS respectively; then guided by the global QoS, the feasible services can be selected efficiently in the service selection step. The experiments show that the DCBC method can not only improve the overall quality of composite services but also guarantee the fulfill ratio of requests and the load balance of services.


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Cite this article

[IEEE Style]
X. Wu, "A Dynamic QoS Adjustment Enabled and Load-balancing-aware Service Composition Method for Multiple Requests," KSII Transactions on Internet and Information Systems, vol. 15, no. 3, pp. 891-910, 2021. DOI: 10.3837/tiis.2021.03.005.

[ACM Style]
Xiaozhu Wu. 2021. A Dynamic QoS Adjustment Enabled and Load-balancing-aware Service Composition Method for Multiple Requests. KSII Transactions on Internet and Information Systems, 15, 3, (2021), 891-910. DOI: 10.3837/tiis.2021.03.005.