随着电力信息化建设的不断加强,能够覆盖各级电力公司的用电信息实时数据采集系统已经上线使用,缓存技术作为核心技术之一应用在该系统中。该缓存技术是一款DBM数据库,该数据库由一系列key-value对的记录构成,读写速度非常快,并且支持双机互为主辅模式,主辅库均可读写,是一款支持高并发的分布式持久存储系统。其中缓存技术的Table模式使用方便,索引和主键条件查询大大提高了查询速度。用电信息实时数据采集系统中在线率统计,定时任务采集,数据入库等重要功能与缓存技术有密切的关系。 With the continuous strengthening of power information construction, the real-time data collection system that can cover the electricity information of all levels of power companies has been put online to use. As one of the core technologies, the cache technology is applied to the system. The cache technology is a DBM database, the database consists of a series of key-value pairs of records, read and write speed is very fast, and support for each main and auxiliary modes, both primary and secondary library can read and write, is a support High concurrent distributed persistent storage system. Table mode cache technology which is easy to use, the index and the primary key condition query greatly improves the query speed. The real-time data collection system using electricity information online rate statistics, timing tasks collection, data storage and other important functions and cache technology are closely related.