基于发布订阅机制的实时中间件的设计与实现  

DESIGN AND IMPLEMENTATION OF REAL-TIME MIDDLEWARE BASED ON PUBLISH/SUBSCRIBE MECHANISM

作　　者：郑鹏怡 张振国[1] 袁战军[1] 

机构地区：[1]陕西国际商贸学院信息与工程学院,陕西西安712046

出　　处：《计算机应用与软件》2018年第2期44-47,53,共5页Computer Applications and Software

摘　　要：针对分布式系统节点分布、数据异构、任务动态的特点,研究中间件在功能和性能方面的需求,设计并实现了一个基于发布/订阅机制的实时中间件。采用分层设计的思想,依次从模型层、通信层和支撑层三个方面完成中间件的构建,使之具有基于分布式对象的数据同步功能、基于以太网的发布订阅通信机制及基于分布式对象的实时性能保障机制。经实验测试表明,该中间件在功能上满足了分布式系统应用的需要,在性能上保证了端到端数据通信延迟小于1毫秒,满足了分布式应用中数据分发对实时性的要求。According to the node distribution,data heterogeneous and task dynamic characteristics of distributed systems,the functionality and performance of middleware are studied,and a real-time middleware was designed and implemented based on publish/subscribe mechanism. Adopting the idea of hierarchical design,the construction of middleware was completed from three aspects of model layer,communication layer and support layer in order to make it have the function of data synchronization based on distributed object,publish and subscribe communication mechanism based on Ethernet,Object real-time performance protection mechanism. Experiments showed that the middleware satisfied the needs of distributed system applications,and ensured that the end-to-end data communication delay was less than 1 millisecond,which meet the requirements of real-time data distribution in distributed applications.

关 键 词：分布式系统 中间件 发布 订阅 实时数据同步 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]