Thread safe rails 2.2 from new core member

[gtani]

http://weblog.rubyonrails.org/2008/8/16/josh-peek-officially-joins-the-rails-core

[gaika]

In jRuby threads are native, so there should be a huge performance boost, has anybody tried it yet?

[scott_s → gaika]

Notice that the project is to make it thread safe, not to make it multithreaded.

[gaika → scott_s]

Rails thread unsafety (active record specifically) was the last block on making multi-threaded apps. JRuby, Mongrel, were multithreaded before that. Mongrel has semaphore around main rails call. I assume once you remove it with Rails 2.2 and jRuby it should be multi-threaded. What am I missing?

[gtani → gaika]

the only thing google turned up is AC's allow_concurrency switch has been removed (in June)

http://github.com/scottburton11/rails/commit/0c9281e82140f3a...

[michaelneale → gaika]

And a huge memory saving !

[smhinsey]

What are the implications of this? Any pointers to more substantive conversation on the topic? ("enterprisey check list" doesn't say much...)

[smhinsey → smhinsey]

I came across this much more helpful summary on reddit: http://blog.headius.com/2008/08/qa-what-thread-safe-rails-me...

[inklesspen]

Thank god!