NAME

       Plack::Loader - (auto)load Plack Servers

SYNOPSIS

         # auto-select server backends based on env vars
         use Plack::Loader;
         Plack::Loader->auto(%args)->run($app);

         # specify the implementation with a name
         Plack::Loader->load('FCGI', %args)->run($app);

DESCRIPTION

       Plack::Loader is a factory class to load one of Plack::Handler subclasses based on the
       environment.

AUTOLOADING

       "Plack::Loader->auto(%args)" will autoload the most correct server implementation by
       guessing from environment variables and Perl INC hashes.

       PLACK_SERVER
             env PLACK_SERVER=AnyEvent ...

           Plack users can specify the specific implementation they want to load using the
           "PLACK_SERVER" environment variable.

       PHP_FCGI_CHILDREN, GATEWAY_INTERFACE
           If there's one of FastCGI or CGI specific environment variables set, use the
           corresponding server implementation.

       %INC
           If one of AnyEvent, Coro or POE is loaded, the relevant server implementation such as
           Twiggy, Corona or POE::Component::Server::PSGI will be loaded, if they're available.