Journaling file system, a technique in computer file systems to prevent corruption
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Electronic message journaling, tracking and retension of electronic communications
Stephen Tweedie first revealed that he was working on extending ext2 in Journaling the Linux ext2fs Filesystem in a 1998 paper, and later in a February 1999 kernel mailing list posting.
File systems typically use a variant of WAL for at least file system metadata called journaling.