[Mongrel] Rails, ActionController::Base.allow_concurrency and mongrel

[François SIMOND]

Hello all,

Are you aware of the rails ActionController::Base.allow_concurrency option ?
If this option is true, rails is able to process simultaneous multiples
actions.

It appears that rails is thread-safe (if the user application is), and
that this option is mostly unknown.
Webrick take care of this option in rails-1.1.2/lib/webrick_server.rb at
line 80 :
    REQUEST_MUTEX.lock unless ActionController::Base.allow_concurrency

I think that even if using multi-threading in mongrel would not increase
performance, it could dramatically decreases memory requirements for
rails apps (usefull for shared hosting) and makes configuration easyer
(proxy becomes optionnal)

Thanks :)

-- 
 François SIMOND
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