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Editorial Team
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Asked: 2026-06-13T12:27:43+00:00

I run several Perl dancer applications at the same time with the same user

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I run several Perl dancer applications at the same time with the same user in FCGI mode (Apache). As I understand correctly, Apache (or any other webserver) will fork a new dancer application if the current one(s) are busy.

To ensure that no visitor is interrupted by the dancer shutdown I like to let dancer handles the current connection until it finished and then exit/last the process.

How to shutdown a Perl dancer application using kill signal HUP to perfom such nice shutdown?

To rollout a new version of a dancer application I use pkill -HUP perl as the dancer user to “shutdown” the processes. But currently (due to missing signal handler) it’s more like shoot ’em down as of shutdown an application.

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  1. Editorial Team

    The solution by mugen kenichi works (starman):

    If you are able to change your infrastructure you could try one of the plack webservers that support your need. starman and hyponotoad both do graceful restarts on SIGHUP

    There are a few shortcoming regarding <% request.uri_base %> so we have to develop with hard coded URI paths. Not very handsome but necessary.

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