title: What is composer in laravel?
body: <p>Sounds weird, but I thought composer was a tool that one used to install packages in PHP stacks. An efficient and robust way to make sure that php environments are setup correctly. </p>
  
  <p>But I keep coming across forum posts that talk about caching and advising to do things like <code>composer clear-cache</code> as if it was part of the actual running application. Like it's actively doing things in the running app. </p>
  
  <p>Am I missing something? </p>