On 05/07/2014 02:43 PM, Иван Бессарабов wrote:

By the way, It is not safe to use YAML sessions with production site.
I used YAML sessions in Dancer1 app and pretty soon there appeared
tons of files with sessions and evrything broke, because there was no
free inodes.

The documentation for Dancer2::Session::YAML, at least, says otherwise:

This backend an [sic] perfectly be used in production environments, but two things should be kept in mind: The content of the session files is in plain text, and the session files should be purged by a CRON job.

I haven't had any problems like you describe, so perhaps your issue was limited to Dancer::Session::YAML, which according to the docs is "not recommended...in production environments." Either that, or you just have too many visitors to your site ;)