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备份系统基于微软.NET技术,通过操作系统API接口访问主备服务器。其基本原理是由数据库触发器记录节目实时变化表(包括节目增加、删除和修改),备份程序定时访问该变化表,并根据变化表各字段的参数,进行相应的节目备份或预载操作,完成一个操作将变化表中的相应记录作一backed标志。90%的备份延时均在2分钟以下,最长延时不超过10分钟,基本实现了实时备份。系统运行后,未出现不同版本同名节目不覆盖等异常,删除文件的转移也能正常运行,为多名编播人员挽救误删节目。
The backup system is based on Microsoft .NET technology and accesses the primary and secondary servers through the operating system APIs. The basic principle is that the database trigger records real-time program changes (including program addition, deletion and modification), and the backup program periodically accesses the change table and performs corresponding program backup or pre-load operations according to the parameters of the fields in the change table, Complete an operation to change the table in the corresponding record for a backed-up mark. 90% of the backup delay are less than 2 minutes, the longest delay of not more than 10 minutes, the basic realization of a real-time backup. After the system is running, there is no abnormal version of the program with the same name does not cover coverage, delete files can also be normal operation of the transfer, save more mistakes delete programs for more than editor.