* Memcache reset on rails 2.3 with preload
@ 2011-03-10 17:16 Troex Nevelin
2011-03-10 20:48 ` Clifton King
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Troex Nevelin @ 2011-03-10 17:16 UTC (permalink / raw)
To: mongrel-unicorn
What is a right code for resetting memcache connection in after_fork for
Rails 2.3 with "preload_app true" on REE?
The only configurations about memcache in my app are:
config/initializers/session_store.rb:
ActionController::Base.session_store = :mem_cache_store
config/environment.rb:
config.cache_store = :mem_cache_store
I tried:
Rails.cache.reset
But it fails to start, looks like this code is for Rails3 only
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Memcache reset on rails 2.3 with preload
2011-03-10 17:16 Memcache reset on rails 2.3 with preload Troex Nevelin
@ 2011-03-10 20:48 ` Clifton King
2011-03-10 21:23 ` Eric Wong
2011-03-10 22:01 ` Lawrence Pit
2 siblings, 0 replies; 6+ messages in thread
From: Clifton King @ 2011-03-10 20:48 UTC (permalink / raw)
To: unicorn list
I opt to use this gem: https://github.com/fauna/memcached
I use the following settings in my environment:
$memcached = Memcached::Rails.new(cache_server,
:namespace => "os-",
:tcp_nodelay => true,
# disable nagle algorithm
:no_block => true)
# dont block on writes
ActionController::Base.cache_store = :mem_cache_store, $memcached
$session_memcached = Memcached::Rails.new(cache_server,
:namespace => "os-",
:tcp_nodelay => true,
# disable nagle algorithm
:no_block => true)
ActionController::Base.cache_store =
:mem_cache_store, $memcached
ActionController::Base.session_store = :mem_cache_store
ActionController::Base.session_options[:cache] = $session_memcached
in after_fork i have
$memcached.reset
$session_memcached.reset
Clifton
On Thu, Mar 10, 2011 at 11:16 AM, Troex Nevelin <list@mrtech.ru> wrote:
> What is a right code for resetting memcache connection in after_fork for
> Rails 2.3 with "preload_app true" on REE?
>
> The only configurations about memcache in my app are:
>
> config/initializers/session_store.rb:
> ActionController::Base.session_store = :mem_cache_store
>
> config/environment.rb:
> config.cache_store = :mem_cache_store
>
>
> I tried:
> Rails.cache.reset
>
> But it fails to start, looks like this code is for Rails3 only
> _______________________________________________
> Unicorn mailing list - mongrel-unicorn@rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
> Do not quote signatures (like this one) or top post when replying
>
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Memcache reset on rails 2.3 with preload
2011-03-10 17:16 Memcache reset on rails 2.3 with preload Troex Nevelin
2011-03-10 20:48 ` Clifton King
@ 2011-03-10 21:23 ` Eric Wong
2011-03-10 22:14 ` Clifton King
2011-03-10 22:01 ` Lawrence Pit
2 siblings, 1 reply; 6+ messages in thread
From: Eric Wong @ 2011-03-10 21:23 UTC (permalink / raw)
To: unicorn list
Troex Nevelin <list@mrtech.ru> wrote:
> What is a right code for resetting memcache connection in after_fork for
> Rails 2.3 with "preload_app true" on REE?
>
> The only configurations about memcache in my app are:
>
> config/initializers/session_store.rb:
> ActionController::Base.session_store = :mem_cache_store
>
> config/environment.rb:
> config.cache_store = :mem_cache_store
So that uses the memcache-client gem? I seem to remember that (and
dalli) only connects when it's needed, but I suppose some apps use
memcached at load time.
The following should work, not the most elegant:
before_fork do |server,worker|
ObjectSpace.each_object(MemCache) { |mc| mc.reset }
end
An after_fork would probably send unnecessary messages to the memcached
servers.
> I tried:
> Rails.cache.reset
>
> But it fails to start, looks like this code is for Rails3 only
Hopefully somebody else knows a more elegant way to handle this.
--
Eric Wong
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Memcache reset on rails 2.3 with preload
2011-03-10 21:23 ` Eric Wong
@ 2011-03-10 22:14 ` Clifton King
0 siblings, 0 replies; 6+ messages in thread
From: Clifton King @ 2011-03-10 22:14 UTC (permalink / raw)
To: unicorn list
Eric,
No, I'm using the "memcached" gem which has a binding for libmemcached
(and is much faster than the memcache-client gem).
The memcached gem has a compatibility wrapper (Memcached::Rails) which
is made to be backwards compatible with memcache-client.
Clifton
On Thu, Mar 10, 2011 at 3:23 PM, Eric Wong <normalperson@yhbt.net> wrote:
> Troex Nevelin <list@mrtech.ru> wrote:
>> What is a right code for resetting memcache connection in after_fork for
>> Rails 2.3 with "preload_app true" on REE?
>>
>> The only configurations about memcache in my app are:
>>
>> config/initializers/session_store.rb:
>> ActionController::Base.session_store = :mem_cache_store
>>
>> config/environment.rb:
>> config.cache_store = :mem_cache_store
>
> So that uses the memcache-client gem? I seem to remember that (and
> dalli) only connects when it's needed, but I suppose some apps use
> memcached at load time.
>
> The following should work, not the most elegant:
>
> before_fork do |server,worker|
> ObjectSpace.each_object(MemCache) { |mc| mc.reset }
> end
>
> An after_fork would probably send unnecessary messages to the memcached
> servers.
>
>> I tried:
>> Rails.cache.reset
>>
>> But it fails to start, looks like this code is for Rails3 only
>
> Hopefully somebody else knows a more elegant way to handle this.
>
> --
> Eric Wong
> _______________________________________________
> Unicorn mailing list - mongrel-unicorn@rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
> Do not quote signatures (like this one) or top post when replying
>
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http://rubyforge.org/mailman/listinfo/mongrel-unicorn
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Memcache reset on rails 2.3 with preload
2011-03-10 17:16 Memcache reset on rails 2.3 with preload Troex Nevelin
2011-03-10 20:48 ` Clifton King
2011-03-10 21:23 ` Eric Wong
@ 2011-03-10 22:01 ` Lawrence Pit
2011-03-23 18:25 ` Troex Nevelin
2 siblings, 1 reply; 6+ messages in thread
From: Lawrence Pit @ 2011-03-10 22:01 UTC (permalink / raw)
To: unicorn list; +Cc: Troex Nevelin
I use:
if Rails.cache.is_a?(ActiveSupport::Cache::MemCacheStore)
Rails.cache.instance_variable_get(:@data).reset
end
Cheers,
Lawrence
> What is a right code for resetting memcache connection in after_fork
> for Rails 2.3 with "preload_app true" on REE?
>
> The only configurations about memcache in my app are:
>
> config/initializers/session_store.rb:
> ActionController::Base.session_store = :mem_cache_store
>
> config/environment.rb:
> config.cache_store = :mem_cache_store
>
>
> I tried:
> Rails.cache.reset
>
> But it fails to start, looks like this code is for Rails3 only
> _______________________________________________
> Unicorn mailing list - mongrel-unicorn@rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
> Do not quote signatures (like this one) or top post when replying
>
_______________________________________________
Unicorn mailing list - mongrel-unicorn@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-unicorn
Do not quote signatures (like this one) or top post when replying
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-03-23 20:27 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-03-10 17:16 Memcache reset on rails 2.3 with preload Troex Nevelin
2011-03-10 20:48 ` Clifton King
2011-03-10 21:23 ` Eric Wong
2011-03-10 22:14 ` Clifton King
2011-03-10 22:01 ` Lawrence Pit
2011-03-23 18:25 ` Troex Nevelin
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