title: Server constantly running a function to update a cache, will it block all other server functions?
body: <p>About once a minute, I need to cache all orderbooks from various cryptocurrency exchanges. There are hundreds of orderbooks, so this update function will likely never stop running.</p>
  
  <p>My question is: If my server is constantly running this orderbook update function, will it block all other server functionality? Will users ever be able to interact with my server? </p>
  
  <p>Do I need to create a separate service to perform the updating, or can Node somehow prioritize API requests and pause the caching function?</p>