If you logged to a database it would be easy to select the logs from one thread.
-----Original Message----- From: DE BENEDICTIS DAVIDE [mailto:[EMAIL PROTECTED] Sent: Thursday, July 15, 2004 9:46 AM To: Log4J Users List Subject: RE: One file for every thread > -----Original Message----- > From: Glenn Strickland [mailto:[EMAIL PROTECTED] > > I think the suggested way of dealing with a multi-threaded > server is not to log each threads output to a separate file, > but to tag each log record with an identifier unique to that > thread, then log them to the same file. I was reading Ceki Gülcü's reply to the same question from another user here: http://www.slimmit.com/go.asp?2SF He was trying to understand a use case for this feature. Now, without going into an indepth description of my app, I agree that NCD and MCD are the best options in a web or J2EE environment: in these apps usally threads are managed entirely form the application server that can dinamically spawn a large number of them to fulfill application requests. Usually a programmer and his application are not thread aware and so a "per thread" logging facility wouldn't be useful at all being nearly impossible to map a thread with a client or tx. But imagine you have a proprietary server application in which the number of threads (application processes) creation is well defined and maybe fixed. Furthermore a particular thread is specialized since app starts executing a single task. In this case is easy mapping one tx with one thread and so could be useful having this feature. Foe example, I could have a POJO server application with five threads running. Each thread has a different instance of a set of objects selling cinema tickets on a db. It's useful just opening one logging file and follow one ticket transaction line by line without having concurrent ticket tx mixed all together. Yes I could do something like: cut -d '[' -f3 tickets.log | cut -d ']' -f1 | uniq | awk '{system("grep -e " $1 " *.log > log"$1 ".txt")}' Having diffent files with different threads logging... But why not something inside my logging facility? ;-)) I hope now I was a little bit clear. Thank you for the patience. -- Davide --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
