Hi, I am analysis memcache. Hence would like to know whats the best client for memcache. Have read a lot about memcache-client gem. Is that the most popular and widely used one? Also most of my queries are complex queries and i have used find_by_sql for the same. Can i cache these results got from find_by_sql? Thanks in advance. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
After reading through a lot of blogs, everyone seems to say that
memcache-client seems to be faster and better.
I installed memcache-client-1.8.5.gem
And my configuration in environment.rb file is:
memcache_options = {
:compression => true,
:debug => false,
:namespace => "mem-#{RAILS_ENV}",
:readonly => false,
:urlencode => false
}
memcache_servers = [ ''127.0.0.1:11211'' ]
CACHE = MemCache.new(memcache_options)
CACHE.servers = memcache_servers
However, evrytime i do a get to memcache in the memcache console i see
it being retrieved, however i get error while displaying it.
The logs show :
MemCache::MemCacheError (Resource temporarily unavailable - ):
c:/jruby-1.5.1/lib/ruby/1.8/net/protocol.rb:116:in `readuntil''
app/controllers/application_controller.rb:102:in `data_cache''
app/controllers/channel_members_controller.rb:27:in `follows''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:95:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `each''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:23:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:82:in `start''
Can anyone help what is happening?
Yani Yen wrote:> Hi,
>
> I am analysis memcache. Hence would like to know whats the best client
> for memcache. Have read a lot about memcache-client gem. Is that the
> most popular and widely used one?
>
> Also most of my queries are complex queries and i have used find_by_sql
> for the same. Can i cache these results got from find_by_sql?
>
> Thanks in advance.
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Quoting Yani Yen <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:> After reading through a lot of blogs, everyone seems to say that > memcache-client seems to be faster and better. > > I installed memcache-client-1.8.5.gem > > And my configuration in environment.rb file is: > > memcache_options = { > :compression => true, > :debug => false, > :namespace => "mem-#{RAILS_ENV}", > :readonly => false, > :urlencode => false > } > > memcache_servers = [ ''127.0.0.1:11211'' ] > > CACHE = MemCache.new(memcache_options) > CACHE.servers = memcache_servers >In my application, all I do is add the following line to conf/environments/production.rb and restart the server: config.cache_store = :mem_cache_store I only cache in production, caching in development is too error prone, I change something and am getting the incorrect cached result instead of the new corrected result. The host and port defaults to 127.0.0.1:11211. Start here, when that works, get fancier, e.g.: config.cache_store = :mem_cache_store, ''127.0.0.1:11211'', { :compression => true, :debug => false, :namespace => "mem-#{RAILS_ENV}", :readonly => false, :urlencode => false } HTH, Jeffrey -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Hi,
What i did in my environment.rb file was created an instance of memcache
and assign it to a constant:
CACHE = MemCache.new(''127.0.0.1'')
and then in my code something like this:
def data_cache(key)
unless output = CACHE.get(key)
output = yield
CACHE.set(key, output, 1.hour)
end
return output
end
Now the problem is i keep getting the error:
MemCache::MemCacheError (Resource temporarily unavailable - ):
c:/jruby-1.5.1/lib/ruby/1.8/net/protocol.rb:116:in `readuntil''
app/controllers/application_controller.rb:102:in `data_cache''
app/controllers/channel_members_controller.rb:27:in `follows''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:95:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `each''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:23:in `start''
c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:82:in `start''
Please help
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Forgot to mention : I had the configuration : config.cache_store = :mem_cache_store in my specific environment file. Still i was getting the above mentioned error Yani Yen wrote:> Hi, > > What i did in my environment.rb file was created an instance of memcache > and assign it to a constant: > > CACHE = MemCache.new(''127.0.0.1'') > > and then in my code something like this: > > def data_cache(key) > unless output = CACHE.get(key) > output = yield > CACHE.set(key, output, 1.hour) > end > return output > end > > Now the problem is i keep getting the error: > MemCache::MemCacheError (Resource temporarily unavailable - ): > c:/jruby-1.5.1/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'' > app/controllers/application_controller.rb:102:in `data_cache'' > app/controllers/channel_members_controller.rb:27:in `follows'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:95:in `start'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `each'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:92:in `start'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:23:in `start'' > c:/jruby-1.5.1/lib/ruby/1.8/webrick/server.rb:82:in `start'' > > > Please help-- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Quoting Yani Yen <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:> Forgot to mention : > > I had the configuration : > config.cache_store = :mem_cache_store > in my specific environment file. > Still i was getting the above mentioned error > > > Yani Yen wrote: > > Hi, > > > > What i did in my environment.rb file was created an instance of memcache > > and assign it to a constant: > > > > CACHE = MemCache.new(''127.0.0.1'') > > > > and then in my code something like this:[snip] Okay, that makes it clearer to me. I think you are starting two instances of the cache client and the second one fails because the first is already present and running. Try with just the config.cache_store = :mem_cache_store and comment out the rest. Jeffrey -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Hi Jeffrey,
I kept the folowing configuration only:
config.cache_store = :mem_cache_store
and it works.
But now i want to try other way that is creating an instance like this:
memcache_options = {
:compression => true,
:debug => false,
:namespace => "mem-#{RAILS_ENV}",
:readonly => false,
:urlencode => false
}
memcache_servers = [ ''127.0.0.1:11211'' ]
CACHE = MemCache.new(memcache_options)
CACHE.servers = memcache_servers
and i commented out the following:
config.cache_store = :mem_cache_store
But during server startup it throws the following error:
=> Booting WEBrick
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencies.rb:443:in
`
load_missing_constant'': uninitialized constant MemCache (NameError)
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie
s.rb:80:in `const_missing_with_dependencies''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie
s.rb:92:in `const_missing''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/config/environment.rb:62
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/config/environment.rb:31:in `require''
from
c:/jruby-1.5.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie
s.rb:156:in `require''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie
s.rb:521:in `new_constants_in''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie
s.rb:156:in `require''
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/railties/lib/commands/server.rb:84
from C:/WEB2.0/Workspaces/RELEASE 2/Version
1/microblogging/vendor/rails/railties/lib/commands/server.rb:31:in
`requi
re''
from
c:/jruby-1.5.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require''
from script/server:3
How do i create a constant which is an instance of memcache, as i am
trying above?
Jeffrey L. Taylor wrote:> Quoting Yani Yen <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:
>> >
>> > What i did in my environment.rb file was created an instance of
memcache
>> > and assign it to a constant:
>> >
>> > CACHE = MemCache.new(''127.0.0.1'')
>> >
>> > and then in my code something like this:
> [snip]
>
> Okay, that makes it clearer to me. I think you are starting two
> instances of
> the cache client and the second one fails because the first is already
> present
> and running. Try with just the
>
> config.cache_store = :mem_cache_store
>
> and comment out the rest.
>
> Jeffrey
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You are fighting Rails, in my experience not a time effective thing to do. Why do you want use Rails and not do it the Rails way? Jeffrey Quoting Prachi Tripathi <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:> Hi Jeffrey, > > I kept the folowing configuration only: > config.cache_store = :mem_cache_store > and it works. > > But now i want to try other way that is creating an instance like this: > > memcache_options = { > :compression => true, > :debug => false, > :namespace => "mem-#{RAILS_ENV}", > :readonly => false, > :urlencode => false > } > > memcache_servers = [ ''127.0.0.1:11211'' ] > > CACHE = MemCache.new(memcache_options) > CACHE.servers = memcache_servers > > and i commented out the following: > config.cache_store = :mem_cache_store > > But during server startup it throws the following error: > > => Booting WEBrick > => Rails 2.3.5 application starting on http://0.0.0.0:3000 > C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencies.rb:443:in > ` > load_missing_constant'': uninitialized constant MemCache (NameError) > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie > s.rb:80:in `const_missing_with_dependencies'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie > s.rb:92:in `const_missing'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/config/environment.rb:62 > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/config/environment.rb:31:in `require'' > from > c:/jruby-1.5.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie > s.rb:156:in `require'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie > s.rb:521:in `new_constants_in'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/activesupport/lib/active_support/dependencie > s.rb:156:in `require'' > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/railties/lib/commands/server.rb:84 > from C:/WEB2.0/Workspaces/RELEASE 2/Version > 1/microblogging/vendor/rails/railties/lib/commands/server.rb:31:in > `requi > re'' > from > c:/jruby-1.5.1/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require'' > from script/server:3 > > How do i create a constant which is an instance of memcache, as i am > trying above? > > > > > > > Jeffrey L. Taylor wrote: > > Quoting Yani Yen <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>: > >> > > >> > What i did in my environment.rb file was created an instance of memcache > >> > and assign it to a constant: > >> > > >> > CACHE = MemCache.new(''127.0.0.1'') > >> > > >> > and then in my code something like this: > > [snip] > > > > Okay, that makes it clearer to me. I think you are starting two > > instances of > > the cache client and the second one fails because the first is already > > present > > and running. Try with just the > > > > config.cache_store = :mem_cache_store > > > > and comment out the rest. > > > > Jeffrey > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Hi, I guess you write. I used memcache the rails way. I have one more doubt. I want a write through cache mechanism. How to enable that? Is there some configuration? Also, found that cache-money is a write through as well as read only cache. I wanted to know how to configure it to behave as write through ie, any new entry should first be made to cache and then to the backing store. In my case the database. The below configuration: :readonly => false, makes cache write enabled, but does it also write it to the backing store? I want a write through cache policy Jeffrey L. Taylor wrote:> You are fighting Rails, in my experience not a time effective thing to > do. > Why do you want use Rails and not do it the Rails way? > > Jeffrey > > Quoting Prachi Tripathi <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:-- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Prachi, I can''t help you there, I''ve used memcache only for caching HTML fragments. There are several fine tutorials on using memcache on the Web, including using it to cache database records. Try railscasts.com, their screencasts are excellent. Jeffrey Quoting Prachi Tripathi <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>:> Hi, > > I guess you write. I used memcache the rails way. > > I have one more doubt. I want a write through cache mechanism. How to > enable that? > > Is there some configuration? > > Also, found that cache-money is a write through as well as read only > cache. I wanted to know how to configure it to behave as write through > ie, any new entry should first be made to cache and then to the backing > store. In my case the database. > > The below configuration: > :readonly => false, > makes cache write enabled, but does it also write it to the backing > store? > > I want a write through cache policy > > > Jeffrey L. Taylor wrote: > > You are fighting Rails, in my experience not a time effective thing to > > do. > > Why do you want use Rails and not do it the Rails way? > > > > Jeffrey-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.