Distributed data management system and method for dynamically subscribing data

Abstract

A distributed data management system includes: an application module (1) and a data manager (2); a data access module (11) and a data buffer (12) are set in the application module (1); a subscribing management module (21), a subscribing list module (22), a notify module (23) and a data memory (24) are set in the data manager (2); in addition, a dynamic subscribing management module (14) and a data record module (15) are also set in the application module (1); a data publish module (25) is set in the data manager (2), and it is connected to the data memory (24); the dynamic subscribing management module (14) is connected to the data record module (15), the data buffer (12) and the data access module (11) respectively and communicates with the subscribing management module (21), the notify module (23) and the data publish module (25). There is also a method for data dynamic subscribing. By using the invention, the data quantity for network transmission and system process is reduced effectively, the network load is lower and the operation performance is improved.

Description

technical field [0001] The present invention relates to a distributed data management system and its method for dynamically subscribing to data, in particular to a distributed data management system with a dynamic subscription management module, a data recording Modules and data publishing modules subscribe to remote data, dynamically manage cached data and update cached data. Background technique [0002] Due to the complexity of software work, the work system is often composed of multiple devices in different places. In this system, the data is often not concentrated in one place, but distributed in various devices in different places. These data in various places are called for distributed data. Due to the needs of software work, the application modules in the working system often need to access these distributed data. If the application module and the data to be accessed are not in the same device, the application module needs to access the remote data through network c...

AI Technical Summary

Problems solved by technology

[0004] As mentioned above, although the existing technology caches the remote data in the hardware device where the application module is located to realize the synchronization of the cached data and the corresponding remote data, however, when the application module subscribes to the remote data, the subscription is relatively rough, and often simply subscribes to a class Data, for example: subscribing to the data of the "School" category in the data store, and in actual applications, the application module only needs to use part of the data in a category of data For other data that is not accessed, such as the data of other schools except A primary school, when it changes, the notification module still continuously updates it through network communication; at the same time, the application module in the prior art subscribes to remote data. Static subscription method, that is, the application module usually only needs to use certain data for a certain period of time, and the data will no longer be used after a period of time, but the application module cannot cancel the subscription in time after subscribing to the data, and the consequences caused by this When the remote data not required by the application module changes, the notification module will continue to update it through network communication, and the working system will continue to process it. This transmission and processing of unnecessary data increases the network burden and reduces the Overall performance of the working system

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