PaaS平台基于元数据的多租户核心引擎的研究与实现

发布时间：2019-07-09 07:29

【摘要】：云计算主要包含Saa S(Software as a Service,软件即服务)、Paa S(Platform as a Service,平台即服务)和Iaa S(Infrastructure as a Service,基础设施即服务)三层服务。Saa S是云计算环境下一种新兴的软件服务的托管模式和“按需组装,按需付费”的商业消费模式。而Paa S是把基础设施平台当作一种服务提供给用户的商业消费模式,在Paa S平台上可以直接开发、部署和运营Saa S应用。本文对CServer Paa S平台中能够支撑Saa S应用的开发、部署与运营的基于元数据的多租户核心引擎进行了研究与实现。首先,论文探讨了Saa S软件的4种成熟度模型,重点研究了多租户的数据处理机制和多租户数据存储技术,并对OSGi技术的运行原理和机制进行了深入探讨。其次,论文结合现有的多租户数据存储技术,提出了一种多租户数据存储模型:MBE(Multiple Basic Table And Extended Table)。MBE能够提高租户数据的整体存储空间利用率,降低租户数据发生模式演化的几率。再次,论文提出了多租户核心引擎的总体架构,并对引擎进行了详细设计,包括引擎的平台运营和资源管理等功能,实现了基于OSGi开发的模块的部署与运营以及租户系统的按需组装。最后,为了提高多租户核心引擎的性能,提出了负载均衡方案,使引擎具有高可用和高并发特性。本文研究的多租户核心引擎已应用在实际的Paa S平台上,能够稳定有效的支持多租户应用的运行。
[Abstract]:Cloud computing mainly includes three-tier services: Saa S (Software as a Service, software as a service (), Paa S (Platform as a Service, platform as a service) and Iaa S (Infrastructure as a Service, infrastructure as a service (Iaa S (Infrastructure as a Service, infrastructure as a service). Saas S is a new hosting mode of software services and a "on-demand assembly, pay-as-you-demand" business consumption model in cloud computing environment. Paa S is a commercial consumption mode which provides infrastructure platform as a service to users. Saa S applications can be developed, deployed and operated directly on Paa S platform. In this paper, the multi-tenant core engine based on metadata, which can support the development, deployment and operation of Saa S application in CServer Paa S platform, is studied and implemented. Firstly, this paper discusses four maturity models of Saa S software, focuses on the multi-tenant data processing mechanism and multi-tenant data storage technology, and discusses the operation principle and mechanism of OSGi technology. Secondly, combined with the existing multi-tenant data storage technology, this paper proposes a multi-tenant data storage model: MBE (Multiple Basic Table And Extended Table). MBE can improve the overall storage space utilization of tenant data and reduce the probability of tenant data evolution. Thirdly, the overall architecture of multi-tenant core engine is proposed, and the engine is designed in detail, including the functions of engine platform operation and resource management, and the deployment and operation of modules based on OSGi and the on-demand assembly of tenant system are realized. Finally, in order to improve the performance of multi-tenant core engine, a load balancing scheme is proposed to make the engine have high availability and high concurrency. The multi-tenant core engine studied in this paper has been applied to the actual Paa S platform and can support the operation of multi-tenant applications stably and effectively.
【学位授予单位】：西安工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP393.09

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