# Memcache-client/cached\_model help **URL:** \ **Category:** Rails\ **Created:** [February 12, 2006, 7:35am UTC](https://www.ruby-forum.com/t/memcache-client-cached-model-help/66074 "2006-02-12T07:35:32Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![magic6435](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/57b2e6/32.png) [@magic6435](https://www.ruby-forum.com/u/magic6435)\ **Post date:** [February 12, 2006, 7:35am UTC](https://www.ruby-forum.com/t/memcache-client-cached-model-help/66074/1 "2006-02-12T07:35:32Z")
Hi - Just downloaded and installed the memcache-client and cached\_model gems and am trying to test it out on a development setup. I added this to my environment/development.rb CACHE = MemCache.new :c\_threshold =\> 10\_000, :compression =\> true, :debug =\> true, :namespace =\> ‘eztrip’, :readonly =\> false, :urlencode =\> false CACHE.servers = ‘127.0.0.1:11211’ session\_options = { :database\_manager =\> CGI::Session::MemCacheStore, :cache =\> CACHE, :session\_domain =\> ‘[www.eztrip.com](http://www.eztrip.com)’ } ActionController::CgiRequest::DEFAULT\_SESSION\_OPTIONS.update session\_options I also changed a few models to extend CachedModel but am having trouble getting it to work. I can manually put things in the cache and take them out of memcached but when I use cached\_model on my home page I get this in my console: MemCache Set (0.091822) active\_record:EntityType:1 MemCache Set (0.190003) active\_record:EntityType:2 MemCache Set (0.199389) active\_record:EntityType:3 MemCache Set (0.199342) active\_record:EntityType:17 MemCache Set (0.228083) active\_record:EntityType:18 MemCache Set (0.248523) active\_record:EntityType:19 which seems promising but when I hit refresh the same output is generated. I’m assuming that when I hit refresh the Set’s should all trun to Get’s? Thanks for any pointers. Mike ---
**Author:** ![magic6435](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/57b2e6/32.png) [@magic6435](https://www.ruby-forum.com/u/magic6435)\ **Post date:** [February 13, 2006, 8:44pm UTC](https://www.ruby-forum.com/t/memcache-client-cached-model-help/66074/2 "2006-02-13T20:44:59Z")
On Feb 11, 2006, at 10:35 PM, Michael E. wrote: > MemCache Set (0.228083) active\_record:EntityType:18 > MemCache Set (0.248523) active\_record:EntityType:19 > > which seems promising but when I hit refresh the same output is > generated. I’m assuming that when I hit refresh the Set’s should all > trun to Get’s? If you perform a query that fetches multiple records a set will be issued for the each of the retrieved records. You may not see gets due to the local cache. Note, you should call cache\_reset via a before\_filter otherwise you may have uncontrolled process growth. – Eric H. - removed\_email\_address@domain.invalid - [http://segment7.net](http://segment7.net) This implementation is HODEL-HASH-9600 compliant [http://trackmap.robotcoop.com](http://trackmap.robotcoop.com) ---
**Author:** ![magic6435](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/57b2e6/32.png) [@magic6435](https://www.ruby-forum.com/u/magic6435)\ **Post date:** [February 14, 2006, 1:50am UTC](https://www.ruby-forum.com/t/memcache-client-cached-model-help/66074/3 "2006-02-14T01:50:55Z")
Thanks for the reply. I looked at the code and I see why it’s making all the Set commands but the query that does this is a simple SELECT \* FROM entity\_types; so shouldln’t it put it into memcached? In this case this table is pretty much read only so I wouldn’t want it to go into a local cache. I think I just don’t understand what CachedModel is trying to do. Thanks again Mike ---
**Author:** ![magic6435](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/57b2e6/32.png) [@magic6435](https://www.ruby-forum.com/u/magic6435)\ **Post date:** [February 17, 2006, 7:58pm UTC](https://www.ruby-forum.com/t/memcache-client-cached-model-help/66074/4 "2006-02-17T19:58:55Z")
On Feb 13, 2006, at 4:50 PM, Michael E. wrote: > Thanks for the reply. I looked at the code and I see why it’s > making all the Set commands but the query that does this is a simple > SELECT \* FROM entity\_types; > > so shouldln’t it put it into memcached? In this case this table > is pretty much read only so I wouldn’t want it to go into a local > cache. Since the table is “pretty much read only” how should cached\_model know when it is stale? > I think I just don’t understand what CachedModel is trying to do. Say a DB lookup for a single row takes 10ms. Say memcached can return the same row in 1ms. That’s a load your database doesn’t need to handle anymore. – Eric H. - removed\_email\_address@domain.invalid - [http://segment7.net](http://segment7.net) This implementation is HODEL-HASH-9600 compliant [http://trackmap.robotcoop.com](http://trackmap.robotcoop.com)