Koha has been a CGI app for ages. And we slowly made it work under Plack to gain performance. We did so, by running it inside a CGI emulation context (i.e. CGI::Emulate::PSGI [1]). We even wired all stuff so packages can take advantage of Plack out of the box (just not enabled by default, that'd be a next future step).

We then introduced a Mojolicious implementation of (a beggining of) a REST API.

Is it time to start thinking of Koha as a Plack app and focus on that?

[1] Through Plack::App::CGIBin actually.
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