title: Refreshing a page without postback in least time irrespective of DB Size
body: <p>Which method is very effective and simple to code to attain this functionality ?</p>
  
  <p>Refreshing a page without postback in least time irrespective of DB Size.</p>
  
  <p>Consider i have 10 million records in table i have to retrive the 1000 records of the
  particular user and display it in the page. He/she might get few more records in next 2 
  seconds. Then i have to hit the DB once again to get those 2 records and alert them abt
  the new message. which method will be good to attain this?</p>
  
  <ol>
  <li>MS AJAX</li>
  <li>Basic XML HttpRequest and response methodology</li>
  <li>Webservice</li>
  <li>WCF </li>
  <li>Any other ??</li>
  </ol>
  
  <p>Kindly let me know with the exact reason why your are going for that option you are 
  suggesting and if possible with an simple example code.</p>
  
  <p>Thanks in Advance.</p>