bionic (3) Starlet.3pm.gz

NAME

       Starlet - a simple, high-performance PSGI/Plack HTTP server

SYNOPSIS

         % start_server --port=80 -- plackup -s Starlet [options] your-app.psgi

         or if you do not need hot deploy,

         % plackup -s Starlet --port=80 [options] your-app.psgi

DESCRIPTION

       Starlet is a standalone HTTP/1.1 web server, formerly known as Plack::Server::Standalone::Prefork and
       Plack::Server::Standalone::Prefork::Server::Starter.

       The server supports following features, and is suitable for running HTTP application servers behind a
       reverse proxy.

       - prefork and graceful shutdown using Parallel::Prefork

       - hot deploy using Server::Starter

       - fast HTTP processing using HTTP::Parser::XS (optional)

COMMAND LINE OPTIONS

       In addition to the options supported by plackup, Starlet accepts following options(s).

   --max-workers=#
       number of worker processes (default: 10)

   --timeout=#
       seconds until timeout (default: 300)

   --keepalive-timeout=#
       timeout for persistent connections (default: 2)

   --max-keepalive-reqs=#
       max. number of requests allowed per single persistent connection.  If set to one, persistent connections
       are disabled (default: 1)

   --max-reqs-per-child=#
       max. number of requests to be handled before a worker process exits (default: 100)

   --min-reqs-per-child=#
       if set, randomizes the number of requests handled by a single worker process between the value and that
       supplied by "--max-reqs-per-chlid" (default: none)

   --spawn-interval=#
       if set, worker processes will not be spawned more than once than every given seconds.  Also, when SIGHUP
       is being received, no more than one worker processes will be collected every given seconds.  This feature
       is useful for doing a "slow-restart".  See
       http://blog.kazuhooku.com/2011/04/web-serverstarter-parallelprefork.html for more information. (default:
       none)

   --child-exit=s
       the subroutine code to be executed right before a child process exits. e.g. "--child-exit='sub {
       POSIX::_exit(0) }'". (default: none)

Extensions to PSGI

   psgix.informational
       Starlets exposes a callback named "psgix.informational" that can be used for sending an informational
       response.  The callback accepts two arguments, the first argument being the status code and the second
       being an arrayref of the headers to be sent.  Example below sends an 103 response before processing the
       request to build a final response.

         sub {
             my $env = shift;
             $env["psgix.informational"}->(103, [
               'link' => '</style.css>; rel=preload'
             ]);
             my $resp = ... application logic ...
             $resp;
         }

NOTES

       Starlet is designed and implemented to be simple, secure and fast, especially for running as an HTTP
       application server running behind a reverse proxy.  It only depends on a minimal number of well-designed
       (and well-focused) modules.

SEE ALSO

       Parallel::Prefork Starman Server::Starter

AUTHOR

       Kazuho Oku

       miyagawa

       kazeburo

       Tomohiro Takezawa

LICENSE

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

       See <http://www.perl.com/perl/misc/Artistic.html>