expire_cache.rb

f = UserFeed.find_by_name("HomeCompany")
languages = Lang.prepared
c = ActionController::Base.new
Housing.find_each(:conditions => { :rss_source_id => f.id }) do |item|
  languages.each do |language|
    c.expire_fragment "#{language.code}/item/#{item.class}/#{item.id}/half"
    c.expire_fragment "#{language.code}/item/#{item.class}/#{item.id}/short"
    c.expire_fragment "#{language.code}/item/#{item.class}/#{item.id}/full/true"
    c.expire_fragment "#{language.code}/item/#{item.class}/#{item.id}/full/false"
  end
end