Advanced Logging Techniques With Apache Page 2 Not all log
entries are useful or interesting. For example, you might want
to ignore all the log entries the testing department generates
but continue recording all user errors. Or, you might want to
ignore everything but HTML accesses in the logs, therefore
ignoring images and other sundry items that might make up your
page. Logging in Apache Creating Custom Log Formats Subdividing
the Logs Logging Directly to a Database or Application Speeding
up the Logging Process You can ignore these elements when you
are processing the logs, but additional processes are then
required. It's also worth remembering that anything recorded and
not used carries CPU and disk overhead. For example, a single
page with 20 images on it will generate 21 entries in the log a
lot of additional work and storage space for something that will
be ignored. When using conditional logging, the environment
variable system sets a variable based on the request. The
CustomLog directive accepts an e