关键词: 云计算, 服务组合, QoS约束, 事务约束, 自适应

Abstract: With the rise of cloud computing, service computing becomes the key technology of cloud computing, and academic field has new thinking about service composition. This paper proposes an adaptive service selection method, which meets atomic transactions and QoS constraints. When looking for an optimal composite path, this method considers the QoS constraints and the transaction constraints among services, and improves reliability by global optimization combined with proper coordination mode selection strategies. Firstly, this paper lays down adaptive modeling rules and QoS models, and cites other scholars’ transaction models and processing rules. Secondly, this paper analyzes the adaptive service selection method mechanism with transaction and QoS constraints. Finally, this paper evaluates the effectiveness and robustness of the proposed method by experiments.

Key words: cloud computing, service composition, QoS constraints, transaction constraints, adaptation