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DBufstorage
- 双缓存存储类,通过两个缓存区的交替存储,减少磁盘的读写次数,节省cpu资源,要求读写时对cpu资源影响小的程序很有用-Cache storage class, alternately by the two buffer storage to reduce the number of disk read and write, save cpu resources, require readers to cpu resources affect small program useful