mod_log_forensic howto | All things Sysadmin
mod_log_forensic is an often forgotten yet very handy tool in debugging webservers. It gives each request a unique ID which you can then track through your log. It first writes the request prefixed with the unique ID, then it writes the same ID once the request is completed. Very useful to spot scripts which never finishes, be it due to client or server issues. You see the entire request including browser information, cookies etc. Like this:
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