title: Squid number of L1 and L2 directories
body: <p>I incresed the cache for my squid proxy. But i really do not understand the params before the size-MB param. </p>
  
  <p>The reference show the fallow: </p>
  
  <p>cache_dir scheme directory size-MB L1 L2</p>
  
  <p>What is L1 and L2 params and how calculate the proper value? </p>