title: How to clear Rails class cache for a specific class (ActiveRecord Model)?
body: <p>When I type <code>Rails.cache.clear</code> ALL the cache made by Rails is cleared. But in my production environment, I set in <code>config/environments/production.rb</code> the configuration <code>config.cache_classes = true</code>.
  But, sometimes, I need to clear cache of a specific class (in my case, a specific ActiveRecord model), not all.</p>
  
  <p>How do I clear the Rails cache made for a specific ActiveRecord Model?</p>