Monoceros - PSGI/Plack server with event driven connection manager, preforking workers
% plackup -s Monoceros --max-keepalive-reqs=10000 --max-workers=2 -a app.psgi
Monoceros is PSGI/Plack server supports HTTP/1.1. Monoceros has a event-driven connection manager and preforking workers. Monoceros can keep large amount of connection at minimal processes.
+--------+ +---+ worker | TCP +---------+ UNIX DOMAIN SOCKET | +--------+ --------------- | manager | ----------------------+ +---------+ | +--------+ <- keepalive -> <-- passing fds --> `---+ worker | +--------+
Features of Monoceros
- a manager process based on AnyEvent keeps over C10K connections
- uses IO::FDPass for passing a file descriptor to workers
- supports HTTP/1.1 and also supports HTTP/1.0 keepalive
And this server inherit Starlet. Monoceros supports following features too.
- prefork and graceful shutdown using Parallel::Prefork
- hot deploy using Server::Starter
- fast HTTP processing using HTTP::Parser::XS (optional)
- accept4(2) using Linux::Socket::Accept4 (optional)
Currently, Monoceros does not support spawn-interval and max-keepalive-reqs.
In addition to the options supported by plackup, Monoceros accepts following options(s). Note, the default value of several options is different from Starlet.
number of worker processes (default: 5)
seconds until timeout (default: 300)
timeout for persistent connections (default: 10)
max. number of requests to be handled before a worker process exits (default: 1000)
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)
max, number of connections to keep in the manager process. If you want to increase this value, You should check your system limitations. (default: half number of POSIX::_SC_OPEN_MAX)
max. number of requests to continue to read a request in a worker process. Monoceros can read a next request after the response for maximum throughput. (default: 100)
if set, randomizes the number of requests to continue to read a request between the value and that supplied by
--max-readahead-reqs (default: none)
disable HTTP keepalive feature (default: enabled)
For more performance. I recommends you to install these module.
Linux only. If Linux::Socket::Accept4 is available, Monoceros use it. accept4(2) can do accept(2) and set SOCK_CLOEXEC|SOCK_NONBLOCK at once.
Monoceros send IO::Handle like body with sendfile(2). Sys::Sendfile is required.
Copyright (C) Masahiro Nagano
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Masahiro Nagano <email@example.com>