title: Does Restful Design support bulkcreate?
body: <p>I have a api to let user add a book <code>http://127.0.0.1/book</code><br>
  What if the user want to create 100 books at a time ?  </p>
  
  <p>I find some discuss <a href="https://stackoverflow.com/questions/411462/restful-way-to-create-multiple-items-in-one-request">here</a><br>
  <code>LiorH</code> said :</p>
  
  <pre><code>Although bulk operations (e.g. batch create) are essential in many systems,  
  they are not formally addressed by the RESTful architecture style.
  </code></pre>
  
  <p>Is it a restful design suggestion??   </p>
  
  <p>I like post one item at one time<br>
  But my partner want create all at one time<br>
  I think create all at one time will have problem if some of them's format is valid,some of them are not<br>
  I want to make sure this   </p>