similar to: Help: Expiring fragment cache across multiple domains

Hi All, We have four domains setup for The Couch: thecouch.org.nz, thecouch.co.nz, www.thecouch.org.nz and www.thecouch.co.nz. They are all handled by the same rails app. The means that fragment caching creates four folders in our cache directory, named after each URL. This introduces two problems: 1: We are caching 4 times as much stuff as necessary 2: Our cache sweepers are only sweeping one

First let me say that Rails caching is very very cool. The traffic (and responsiveness) I''ve saved by added 10 lines of ruby code would be enourmous, if I actually had traffic... ;) Sweepers as observers are great, btw. Since every page of my side is dynamic, once I did some DB optimization I''m caching the content of the index page which was taking the bulk of the time to load

I''ve just set up caching on my site and want to expire some of fragments on an hourly basis. I was going to use cron and script/runner to do this. For other fragments that I am expiring, I am using expire_fragment inside a sweeper class, something like: class QuestionSweeper < ActionController::Caching::Sweeper observe Question def after_validation_on_update(question)

I''m using a cache sweeper class [1] to take care of some pretty complex sweeping. However, there is a problem with the current implementation. Namely, the sweeper gets called only when an action named in cache_sweeper is called using GET. As many methods where sweeper would be useful are using postback to send the form to the same action, this causes the cache to get swept when

Hi I''m working on a program which relies on heavy cache sweeper usage. I''ve just bumped onto an odd problem. When using render_component method in layouts or templates with cache sweeping turned on, Rails throws an exception with the following message: NoMethodError in TestController#index You have a nil object when you didn''t expect it! The error occured while

I fired up the debugger and watched the code happen tonight. The problem occurs if the config.action_controller.perform_caching = true in your environment. It''s not set to true in development but it is set to true in production and staging. The problem occurs not in my controllers but in sweeping.rb (part of rails). Rails calls this code for every controller which was instantiated in

After drawing many virtual blank stares in the IRC channel and finding zero results on the wiki for ''sweeper'' I''m left to wonder whether these are actually officially supported, or are on their way toward being deprecated. Is there a better way of expiring caches on model saves and deletions? Sincerely, Tom Lieber tom@alltom.com http://AllTom.com/

I noticed a lot of repetition across different Sweeper models in my app expiring the same fragments and so have been trying to move all the expire_fragment calls into another model which the sweepers can then use but it''s not working as I''d hoped.. I''ve created a CacheDestroyer model and want to be able to call something to the effect of:

I''m having a bear of a time getting my cached pages to expire. Maybe one of you guys can help me out. I''ll show my sweeper and then my log to show that it "should" be working. class PragmaticSweeper < ActionController::Caching::Sweeper observe Comment def after_save(comment) expire_page(comment.post_id) end private def expire_page(post_id)

I created a script that I call by ''./script/runner -e production UpdateItems.get_new_items()'', which basically calls the model Item: Item.create(attributes...) I''ve set up a cache sweeper which removes caches after each create/destroy/update on Item, and it works fine when accessing controllers via the web server, but apparently doesn''t work via runner.

In the site I''m building, my models are *almost* never updated within ActionController-- all new data comes in via command line scripts manipulating ActiveRecord directly. Can anyone offer any hints about expiring cached actions without Sweeper? -Ross

Hi all, In my OrdersController, I have two actions completed and incomplete that respond_to HTML and CSV. Im also action caching these actions .. caches_action :completed, :incomplete ... def completed @orders = Order.completed respond_to do |format| format.html format.csv {render :layout => false} end end def incomplete @orders = Order.incomplete respond_to do

I''m working on an app that''s basically forms and that makes fairly heavy use of Ajax. As a result of the Ajax usage, if the visitor uses the back button they get the page as it was originally loaded, not as they left it. I''ve looked at the Sweeper documentation and can not tell for sure that it''ll do what I want, which is to force an unconditional reload from

Hi, I''ve started to implement page caches but I''ve hit a brick wall getting a sweeper to clear the cache when needed. It seems that any models that I tell it to observe aren''t being observed properly. If I add the sweeper to a controller the initialize method runs, but no matter what I do the after_save/after_update callbacks aren''t running. Also if I try to

Hi, I''m trying to use sweepers for the first time and got a problem - I get "undefined method `merge'' for "/signature/ f2d7c7c66450b169.html":String". The "/signature/f2d7c7c66450b169.html" part of the error message is the cached page. Here''s my sweeper: class FooSweeper < ActionController::Caching::Sweeper observe Foo def

Hi everyone, So, I''m working with Rails 1.0 for now, and I''ve set up some caching: <% cache(:action => ''list'', :part => ''departments'') do %> # Etc... Now, I haven''t set up any expiration sweepers or triggers yet, but I thought there would be an HTML page somewhere I could delete and then have the cache rebuilt. Is that

I have an application that is used by only a small number of persons. This app stores its sessions in the database. When the user logs out, the session is removed, but of course, there is always the possibility that the user will forget to logout, and the session will go stale. In other webapps, I have used a sweeper ruby script that I run as a cron job to periodically clean these out. But I

Hello, I need to expire cache outside controller, in my rake tasks. I want to use standard methods expire_fragment,etc.. but I can''t manage to use them outside controllers. I tried including ActiveController::Caching::Actions but didn''t work. Anyone has any solution? I''m losing my head how to do it... (besides manually deleting files) Thanks Uros

Hello, I''m trying to figure out how I could implement fragment caching that expires every x amount of time. I thought of writing a runner script that would expire the cache and set it as a cron job, but that doesn''t really work because runner scripts act on models and not controllers. Does anybody have any ideas? Regards, -carl

xponrails wrote: > Hi all. > > I need to expire cached fragments from outside sweepers or > controllers: I have a rake task that calls a method inside a module in > the /lib directory. This task will be called at a scheduled time by a > crontab job. > > After method execution I would like to expire some cached fragments. > > I''ve just tried to import