[Rails] Caching suggestions

Tom Fakes
2006-01-19T07:28:53Z

Take a look at Action caching:



class FooController < ApplicationController

            caches_action :index



            def index

                        .

            end

end



Action caching uses the Fragment cache configuration and stores the HTML
output to the client on the first request.



Action caching is implemented as a Before filter.  Any Before filter defined
before the caches_action call will still be executed, so you can do things
like check to see if the user is allowed to access this page.







  _____

From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Vivek Krishna
Sent: Wednesday, January 18, 2006 11:18 PM
To: rails@lists.rubyonrails.org
Subject: [Rails] Caching suggestions



Hi ,
  I have created a simple app which allows user logins and when user logs in
a home page is shown which is built using some queries to the DB. I tried
caching which didnt work properly because for some reason rails kep loading
the old cache..Anyway What I was wondering is caching only avoids the render
process but IMHO the queries are the most consuming.

My code is something like

def index
@messages =find_all_messages
# other stuff which does db query and some biz logic to create arrays which
are used in the view
render :action =>''index''
end


Even though the index can be cached the  code to create the user''s
homepage
related variables are recalculated?How do I avoid that?
Has anyone faced such an issue? I am thinking if storing the results in a
temporary table till the session is alive is a good idea.or may be check if
cache exists to avoid doing calculations,but there doesnt exist any such
API.

Any suggestions?

Regards
Vivek

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