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Starman - High-performance preforking PSGI/Plack web server
# Run app.psgi with the default settings
> starman
# run with Server::Starter
> start_server --port -- starman --workers 32 myapp.psgi
# UNIX domain sockets
> starman --listen /tmp/starman.sock
Starman is a PSGI perl web server that has unique features such as:
High Performance
Uses the fast XS/C HTTP header parser
Spawns workers preforked like most high performance UNIX servers do.
Starman also reaps dead children and automatically restarts the
worker pool.
Supports "HUP" for graceful worker restarts, and "TTIN"/"TTOU" to
dynamically increase or decrease the number of worker processes, as
well as "QUIT" to gracefully shutdown the worker processes.
Superdaemon aware
Supports Server::Starter for hot deploy and graceful restarts.
Multiple interfaces and UNIX Domain Socket support
Able to listen on multiple intefaces including UNIX sockets.
Small memory footprint
Preloading the applications with "--preload-app" command line option
enables copy-on-write friendly memory management. Also, the minimum
memory usage Starman requires for the master process is 7MB and
children (workers) is less than 3.0MB.
PSGI compatible
Can run any PSGI applications and frameworks
HTTP/1.1 support
Supports chunked requests and responses, keep-alive and pipeline
UNIX only
This server does not support Win32.
Here's a simple benchmark using "Hello.psgi".
-- server: Starman (workers=10)
Requests per second: 6849.16 [#/sec] (mean)
-- server: Twiggy
Requests per second: 3911.78 [#/sec] (mean)
-- server: AnyEvent::HTTPD
Requests per second: 2738.49 [#/sec] (mean)
-- server: HTTP::Server::PSGI
Requests per second: 2218.16 [#/sec] (mean)
-- server: HTTP::Server::PSGI (workers=10)
Requests per second: 2792.99 [#/sec] (mean)
-- server: HTTP::Server::Simple
Requests per second: 1435.50 [#/sec] (mean)
-- server: Corona
Requests per second: 2332.00 [#/sec] (mean)
-- server: POE
Requests per second: 503.59 [#/sec] (mean)
This benchmark was processed with "ab -c 10 -t 1 -k" on MacBook Pro 13"
late 2009 model on Mac OS X 10.6.2 with perl 5.10.0. YMMV.
The name Starman is taken from the song (*Star na Otoko*) by the
Japanese rock band Unicorn (yes, Unicorn!). It's also known as a song by
David Bowie, a power-up from Super Mario Brothers and a character from
Earthbound, all of which I love.
Why the cute name instead of more descriptive namespace? Are you on drugs?
I'm sick of naming Perl software like
HTTP::Server::PSGI::How::Its::Written::With::What::Module and people
call it HSPHIWWWM on IRC. It's hard to say on speeches and newbies would
ask questions what they stand for every day. That's crazy.
This module actually includes the longer alias and an empty subclass
HTTP::Server::PSGI::Net::Server::PreFork for those who like to type more
::'s. It would actually help you find this software by searching for
*PSGI Server Prefork* on CPAN, which i believe is a good thing.
Yes, maybe I'm on drugs. We'll see.
Tatsuhiko Miyagawa <>
Andy Grundman wrote Catalyst::Engine::HTTP::Prefork, which this module
is heavily based on.
Kazuho Oku wrote Net::Server::SS::PreFork that makes it easy to add
Server::Starter support to this software.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Plack Catalyst::Engine::HTTP::Prefork Net::Server::Prefork