title: Caching DNS using getaddrinfo
body: <p>I am using system call getaddrinfo() to obtain IP address from DNS.</p>
  
  <p>I will like to know if the cache information is stored on Linux or not?</p>
  
  <p>If the cached information is stored, is it possible to clear the cache information?</p>
  
  <p>I will like to know how to clear the cache information.</p>
  
  <p>Thanks .</p>