I don't think there's any sudden urgency to switch to something else, since
nothing has actually changed about the state of mod_perl. However, if you
do want to migrate to something else, you should look at Plack:
https://metacpan.org/pod/Plack
Plack is not a drop-in replacement for mod_perl, but
The problem is I don't think there is mod_perl is quite a unique infrastructure
- across all language I believe! I don't think any other language/framework
gives you this level of flexibility.
Most frameworks just concentrate on the request phase and shoe horn everything
in there - so you can't
