"A server log is a log file which is created and updated by a
server. A common example is an access log generated by Apache (open
source web server software), which provides a history of web page
requests. However, Apache does not only capture information to that
access log. There is also information captured in its error log as
well as a process id file, script log and a rewrite log.
"These log files are everywhere. Applications capture an
enormous amount of information to log files, especially as a server
may generate multiple logs. It is important to review log files to
obtain feedback about the activity and performance of the server,
and to identify hints to solve any problems that may arise.
However, the administrator of the system can suffer from
information overload, and reviewing the log files in an efficient
way can be a very time consuming task."