What is PSGI/Plack in Perl?

PSGI (Perl Web Server Gateway Interface) and Plack are frameworks that enable developers to create web applications in Perl. PSGI provides a standardized interface between web servers and Perl web applications, making it easier to deploy and manage applications across different environments. Plack is the middleware that sits on top of PSGI, allowing developers to compose and customize application behavior by stacking various middleware components.

With PSGI and Plack, you can develop portable web applications that can run on any PSGI-compliant web server, ensuring flexibility and scalability in your development process.

# Sample PSGI application use strict; use warnings; use Plack::Builder; my $app = sub { my $env = shift; return [200, ['Content-Type' => 'text/plain'], ['Hello, PSGI!']]; }; # Building the application with Plack my $app_with_middleware = builder { enable 'Plack::Middleware::Static', path => qr{^/static/}, root => 'public/'; $app; }; return $app_with_middleware;

PSGI Plack Perl web applications web server gateway middleware Perl frameworks

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