logrotate config for apache with rotating by files' size and gathering statistics from the old logs before compressing them.

httpd_logrotate.md

Put the following into your /etc/logrotate.d/httpd:

# use the standard parameters for error log
/var/log/httpd/error_log {
    missingok
    notifempty
    sharedscripts
    postrotate
	/sbin/service httpd graceful 2> /dev/null || true
    endscript
}

# and the non-standard ones for access log
/var/log/httpd/access_log {
    compress
    size 256M
    rotate 9
    nodateext
    missingok
    notifempty
    sharedscripts
    postrotate
	/sbin/service httpd graceful 2> /dev/null || true
	/path/to/your/stat/script < /var/log/httpd/access_log.1
    endscript
}

And DON'T FORGET to move your /etc/cron.daily/logrotate to /etc/cron.hourly/ (of course, if your logs grow fast enoght)