title: Sitecore 8.2 PaaS (Azure) save xml read-able by all instances
body: <p>We have a Sitecore 8.2 update4 installation up and running as PaaS with 4 CD (web) instances. Due to emergency circumstances the responsible Sitecore developer is currently not available and therefore i'm supposed to find a solution for the problem at hand over this weekend and I hope you might be able to help. Note: I'm not a certified Sitecore developer but a quite experienced C# dev.</p>
  
  <p>Problem:
  There is an API called (in code) via http which returns an XML document (very small - just 2 nodes in it). It has been noticed that this is actually being done-/executed for each client who surfs this specific page. Of course this is super bad and also slows the page down (TTFB). So i actually moved the polling to this API to the backend via a scheduled task in Sitecore which works already perfect. 
  However in my ignorance (I basically have almost no clue about developing against Sitecore) I wanted to store the returning xml document from the API to the local filesystem. This of course will not work when I want to read the XML again in a multi-instance environment. </p>
  
  <p>So in summary I look for a way to store,read and update this xml document so it can be read by all 4 (or more) instances.</p>
  
  <p>I found the following example: <a href="https://briancaos.wordpress.com/2009/07/09/adding-a-file-to-the-sitecore-media-library-programatically/" rel="nofollow noreferrer">Adding a file to the Sitecore Media Library programatically</a></p>
  
  <p>But of course i'm very uncertain if it makes sense to store it in the MediaLibrary. By reading some older "Content API Cookbook" of SiteCore (remember i do not have access to the dev network of SiteCore) also the "Sitecore.Data.Fields.FileField" seems to be a solution. However, i do not want the field to be visible to ContentEditor's to avoid them modifying it.</p>
  
  <p>Please understand i do not have super much time to learn everything about SiteCore and it is actually not my job to do so, but i offered my help. So a simple solution with a small example (as i could not really find a fitting example online) would be extremly helpful and highly appreciated!</p>
  
  <p>Thank you in advance!</p>