@people = Person.where(conditions).includes(eager_fetch).all

@people = Person.where(conditions).all
@fragments = {}
@people.dup.each do |person|
  cache_key = "fragment-for-#{person.id}-#{person.updated_at.to_i}"
  fragment = Rails.cache.fetch(cache_key)
  unless fragment.nil?
    @fragments[person.id] = fragment
    @people.delete person
  end
end
@people = Person.where(:id => @people.collect(&:id)).includes(eager_fetch).all

Person.send :preload_associations, @people, eager_fetch