Generate access logs for different subdirectories in Apache

Question

I have some sub-applications in my site, for example:

http://server/app/subapp1
http://server/app/subapp2

How can I generate different log

Answer 1

Try this:

SetEnvIf Request_URI ^/app/subapp1(/|$) subapp1
SetEnvIf Request_URI ^/app/subapp2(/|$) subapp2

CustomLog /absolute/path/to/app/subapp1/log/access_log common env=subapp1
CustomLog /absolute/path/to/app/subapp2/log/access_log common env=subapp2