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>