关键词: 关键词：数据分发服务, 发布/订阅, 通讯机制, 服务调度机制

Abstract:

In a distributed environment, distributed nodes exist in the various forms of data exchange, in order to realize the

flexible and reliable data exchange, a general communication mechanism is needed for data exchange application

infrastructure. At the same time, data distribution service (DDS) framework invented by Object Management Group, its core is

the datacentric publishsubscribe pattern, can solve data exchange and distribution problem in distributed environment

very well. Firstly, this paper introduces the data distribution service theory and its advantages, then introduces a support

multiple data packets and file transfer communication mechanism as the application infrastructure and the service scheduling

mechanism of this communication mechanism, finally, based on the DDS framework, combining to the servicecentric and

transaction code driven architecture, designs and implements a datacentric publishsubscribe pattern.
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Key words: Key words:data distribution service, publish/subscribe, communication mechanism, service scheduling mechanism