System architecture based on student dormitory passageway system and system data synchronization method thereof

Abstract

The invention discloses a system architecture based on student dormitory passageway system and a system data synchronization method. The system adopts a Client / Server architecture which is divided into three layers, and comprises a central server, wherein the central server is bi-directionally connected with a plurality of auxiliary central servers, and each auxiliary central server is bi-directionally connected with at least one client; and the central server further is connected with the client. The client adopts an embedded apparatus as a C / S system client so as to save the system cost and save the resource. With the three-layer system architecture, when the visit capacity of the central server reaches a certain limit, partial visit capacity is branched to the auxiliary central servers so that the load of the central server is effectively reduced; the decider of a client data synchronization policy is handed over to the central server by a client synchronizer so that the synchronous program function of the client is simplified without modification; therefore, the work efficiency is improved, and the work of developer is simplified.

Description

Technical field [0001] The invention relates to a system based on student dormitory channels and a system data synchronization method. Background technique [0002] The barrier-free passage system of student apartments currently generally adopts the C / S architecture. Generally, a server is used as a data source to provide system data and website access. Each passage machine corresponds to a PC as a client, responsible for real-time monitoring and data upload. There are several problems with this architecture: [0003] 1. Clients generally use PCs with windows desktop systems [0004] At present, the clients of the barrier-free passage system in domestic student apartments generally use PCs equipped with windows desktop systems as the software and hardware platforms of the system. There are two main drawbacks to using this platform: [0005] 1) As we all know, the windows desktop system has poor security and is vulnerable to various computer viruses such as worms and Trojan horses. T...

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Problems solved by technology

[0005] 1) As we all know, the windows desktop system has poor security and is vulnerable to various computer virus attacks such as worms and Trojan horses. However, the barrier-free channel system is generally located in a closed network, and its virus database cannot be updated even if anti-virus software is installed. The attack is also in vain

This makes the client data always in an unsafe environment, which is easy to be lost or stolen due to system crashes. In addition, in order to ensure the normal operation of all systems, a lot of daily maintenance by the administrator is also quite laborious.

[0006] 2) The function of the barrier-free channel system client is relatively specific, and it is only used for simple tasks such as monitoring, capturing, and uploading data. Using a PC as its hardware platform is a waste of resources, and there are many clients, and the use of PCs is greatly increased. total system cost

[0007] 2. The server is generally under high pressure and the work efficiency is low

[0008] The barrier-free access system of student apartments usually has a large number of clients, and the real-time or regular uploaded pass records have a large amount of data. According to statistics, a university with about 30,000 students will generate five to six hundred Tens of thousands of passing records, the large number of database I / O operations generated by uploading these records on the server side make the server always in a state of full load, making it overwhelmed and unable to respond to user query requests in a timely manner

[0009] 3. It is not easy to add or change functions on the client side

Users may wish to add or change certain functions, and the original database structure may not support these new functions, so it is often required to change the database structure, such as adding or deleting tables, changing table structure, adding or deleting constraints, etc., and the synchronization process is also It will change accordingly. There are a large number of clients and cannot be modified manually. Only through the synchronization program of the database. The traditional update method is to generate a new version of the program, but it is unnecessary to replace the database synchronization program every time a simple change is made to the structure of the database. It is a very uneconomical approach to reduce the burden on developers

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