ruby on rails - Where to store total of all records? -

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I have been created with all the projects app on the home page of my Rail Project Management app.

This is very easy to achieve. Right now, I'm just doing this: 

  & lt; P & gt; Total Project: & lt;% = Project.count% & gt; & Lt; / P & gt;   
 However, I do not like the fact that every time a user sees the home page  
 Is there a more effective way to store the store in a project total, eg a variable or a file?  
 By the way, there is no need to be super-numeric for counting. I want to use it for marketing purposes.  
 Thanks for any help.   
 
 
 Application Controller in You:  
  def project_count Rails.cache Fetch ('project_count') {Project.count} End helpper_method: project_count   
 View in your:  
  <% = project_count%> & gt;   
 for termination etc.

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