MyApp->to_app;
builder {
    enable 'Deflater';
    mount '/' => MyApp->to_app;
    mount '/json' => MyApp::Controller->to_app;
}
##</code><code>##

serializer: "JSON"
engines:
   serializer:
       JSON:
           pretty: 1
           allow_blessed: 1
           canonical: 0
           utf8: 1

##</code><code>##

set serializer => 'JSON';