NAME Plack::Middleware::SizeLimit - Terminate processes if they grow too large SYNOPSIS use Plack::Builder; builder { enable "Plack::Middleware::SizeLimit" => ( max_unshared_size_in_kb => '4096', # 4MB # min_shared_size_in_kb => '8192', # 8MB # max_process_size_in_kb => '16384', # 16MB check_every_n_requests => 2 ); $app; }; DESCRIPTION This middleware is a port of the excellent Apache::SizeLimit module for multi-process Plack servers, such as Starman, Starlet and "uWSGI". This middleware only works when the environment "psgix.harakiri" is set to a true value by the Plack server. If it's set to false, then this middleware simply does nothing. CONFIGURATIONS max_unshared_size_in_kb The maximum amount of *unshared* memory the process can use; usually this option is all one needs. Experience on one heavily trafficked mod_perl site showed that setting this option and leaving the others unset is the most effective policy. This is because it only kills off processes that are truly using too much physical RAM, allowing most processes to live longer and reducing the process churn rate. min_shared_size_in_kb Sets the minimum amount of shared memory the process must have. max_process_size_in_kb The maximum size of the process, including both shared and unshared memory. check_every_n_requests Since checking the process size can take a few system calls on some platforms (e.g. linux), you may specify this option to check the process size every *N* requests. SEE ALSO Starman, Starlet AUTHORS 唐鳳 CC0 1.0 Universal To the extent possible under law, 唐鳳 has waived all copyright and related or neighboring rights to Plack::Middleware::SizeLimit. This work is published from Taiwan.