發送短信 : A heuristic approach to file placement in distributed systems

 _    _     _____    _____       ___      _____   
| || | ||  |  ___|| |  __ \\    / _ \\   /  ___|| 
| || | ||  | ||__   | |  \ ||  / //\ \\ | // __   
| \\_/ ||  | ||__   | |__/ || |  ___  ||| \\_\ || 
 \____//   |_____|| |_____//  |_||  |_|| \____//  
  `---`    `-----`   -----`   `-`   `-`   `---`