title: How to test/simulate concurrent connections for a website?
body: <p>HI,</p>
  
  <p>I would like test access time for my website (or certain page, or query) WHEN there are 5000 concurrent connections. I want to test it for a high traffic website.</p>
  
  <p>is it possible to simulate 5000 concurrent connections? if not, how do people test such situation? </p>
  
  <p>If this question can't be answered, what keyword should I use to start searching?</p>