title: Ruby on Rails global array
body: <p>I  want to instantiate an array that is accesible trough all the application, the array may change while the application is running but it will be re-generated when the application starts again.</p>
  
  <p>I have though about putting that array in the ApplicationController but it will die once the request is over or not ?; and I just need it to populate it once every time the app starts running not every time a controller action is called.</p>
  
  <p>The array is populated from the database and that has to be already loaded.</p>
  
  <p>Thanks in advance for any guidance.</p>