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An Approach to Design Reusable Workflow Engine
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作者 LI Hai-bo DOU Yu NIU Zhi-yong 《Journal of Northeast Agricultural University(English Edition)》 CAS 2005年第2期146-150,共5页
Developers still need design workflow system according to users' specific needs, though workflow management coalition standardized the five kinds of abstract interfaces in workflow reference model. Specific business ... Developers still need design workflow system according to users' specific needs, though workflow management coalition standardized the five kinds of abstract interfaces in workflow reference model. Specific business process characteristics are still supported by specific workflow system. A set of common functionalities of workflow engine are abstracted from business component, so the reusability of business component is extended into workflow engine and composition method is proposed. Needs of different business requirements and characteristics are met by reusing the workflow engine. 展开更多
关键词 workflow engine software reuse reuse strategy
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Operational Semantic of Workflow Engine and the Realizing Technique
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作者 FU Yan-ning LIU Lei ZHAO Dong-fan JIN Long-fei 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2005年第4期17-20,47,共5页
At present, there is no formalized description of the executing procedure of workflow models. The procedure of workflow models executing in workflow engine is described using operational semantic. The formalized descr... At present, there is no formalized description of the executing procedure of workflow models. The procedure of workflow models executing in workflow engine is described using operational semantic. The formalized description of process instances and activity instances leads to very clear structure of the workflow engine, has easy cooperation of the heterogeneous workflow engines and guides the realization of the workflow engine function. Meanwhile, the software of work flow engine has been completed by means of the formalized description. 展开更多
关键词 workflow engine process model process instance activity instance operational semantic
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Adaptive resource allocation for workflow containerization on Kubernetes 被引量:1
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作者 SHAN Chenggang WU Chuge +3 位作者 XIA Yuanqing GUO Zehua LIU Danyang ZHANG Jinhui 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2023年第3期723-743,共21页
In a cloud-native era,the Kubernetes-based workflow engine enables workflow containerized execution through the inherent abilities of Kubernetes.However,when encountering continuous workflow requests and unexpected re... In a cloud-native era,the Kubernetes-based workflow engine enables workflow containerized execution through the inherent abilities of Kubernetes.However,when encountering continuous workflow requests and unexpected resource request spikes,the engine is limited to the current workflow load information for resource allocation,which lacks the agility and predictability of resource allocation,resulting in over and underprovisioning resources.This mechanism seriously hinders workflow execution efficiency and leads to high resource waste.To overcome these drawbacks,we propose an adaptive resource allocation scheme named adaptive resource allocation scheme(ARAS)for the Kubernetes-based workflow engines.Considering potential future workflow task requests within the current task pod’s lifecycle,the ARAS uses a resource scaling strategy to allocate resources in response to high-concurrency workflow scenarios.The ARAS offers resource discovery,resource evaluation,and allocation functionalities and serves as a key component for our tailored workflow engine(KubeAdaptor).By integrating the ARAS into KubeAdaptor for workflow containerized execution,we demonstrate the practical abilities of KubeAdaptor and the advantages of our ARAS.Compared with the baseline algorithm,experimental evaluation under three distinct workflow arrival patterns shows that ARAS gains time-saving of 9.8% to 40.92% in the average total duration of all workflows,time-saving of 26.4% to 79.86% in the average duration of individual workflow,and an increase of 1% to 16% in centrol processing unit(CPU)and memory resource usage rate. 展开更多
关键词 resource allocation workflow containerization Kubernetes workflow management engine
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基于Paas模式下多租户感知BPEL引擎的研究
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作者 李俊辉 傅晓峰 《电脑知识与技术》 2013年第12X期8241-8243,共3页
多租户感知工作流程引擎(Multi-Tenant Aware Workflow Engine)是针对目前工作流程引擎系统缺少租户对业务流程的灵活、动态的配置,导致企业信息系统间业务流程的缺乏可重复性使用的现状,提出了基于PaaS模式下多租户感知流程引擎的概念... 多租户感知工作流程引擎(Multi-Tenant Aware Workflow Engine)是针对目前工作流程引擎系统缺少租户对业务流程的灵活、动态的配置,导致企业信息系统间业务流程的缺乏可重复性使用的现状,提出了基于PaaS模式下多租户感知流程引擎的概念和模型,同时对多租户感知流程引擎的实现提出了总体要求,功能性要求以及非功能性要求,并通过对Or chestra流程引擎的扩展和延伸实现了多租户感知流程引擎的原型。 展开更多
关键词 云计算 多租户感知 工作流程引擎 PAAS BPEL workflow engine BPaaS Multiple Instance Multi-Tenancy
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