Saving data in JFFS2 file system runs simply, which is more suitable to embedded environment compared with traditional data-base.
JFFS2文件系统保存数据简单快捷，占用空间少，跟传统的数据库相比更适应于嵌入式环境。
This is done by using JFFS2 (Journaling Flash File System version 2), which compresses stored data; the 21,544 blocks of storage available hold roughly 60,000 blocks of files.
这是通过使用 JFFS2（Journaling Flash File System version 2）实现的，它会对所存储的数据进行压缩；这 21,544 个存储块可以容纳大约 60,000 个文件块。
Journaling Flash File System, version 2 (JFFS2).
日志闪存文件系统，版本2 (JFFS2)。
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