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copied!<p>I'm firmly against building on the production box, because it means you're using a different build than you tested with. It also means every deployment machine has a different JAR/WAR file. If nothing else, do a unified build just so that when bug tracking you won't have to worry about inconsistencies between servers.</p> <p>Also, you don't need to put the builds into version control if you can easily map between a build and the source that created it.</p> <p>Where I work, our deployment process is as follows. (This is on Linux, with Tomcat.)</p> <ol> <li><p>Test changes and check into Subversion. (Not necessarily in that order; we don't require that committed code is tested. I'm the only full-time developer, so the SVN tree is essentially my development branch. Your mileage may vary.)</p></li> <li><p>Copy the JAR/WAR files to a production server in a shared directory named after the Subversion revision number. The web servers only have read access.</p></li> <li><p>The deployment directory contains relative symlinks to the files in the revision-named directories. That way, a directory listing will always show you what version of the source code produced the running version. When deploying, we update a log file which is little more than a directory listing. That makes roll-backs easy. (One gotcha, though; Tomcat checks for new WAR files by the modify date of the real file, not the symlink, so we have to touch the old file when rolling back.)</p></li> </ol> <p>Our web servers unpack the WAR files onto a local directory. The approach is scalable, since the WAR files are on a single file server; we could have an unlimited number of web servers and only do a single deployment.</p>

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