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An application launched by Passenger may be restarted by creating a file in tmp/ (NB: not /tmp) within the application root directory, usually one level down from public/. Create a file under tmp/ named restart.txt to restart the application once. A restart will happen within 2 minutes.
To restart an application on every request, very useful for in-place debugging, create a file named always_restart.txt.
Hinweis: do not leave always_restart.txt file for an application in production. This results in very poor performance.