rver-for-updates"><img decoding="async" src="https://www.quora.com/favicon.ico" alt="" width="16" height="16"/>How do you push messages back to a web-browser client through AJAX? Is there any way to do this without having the client constantly polling the server for updates?</a></p>
<h4 id="mysql"><span class="ez-toc-section" id="MySQL"></span>MySQL<span class="ez-toc-section-end"></span></h4>
<p>就像Adam D’Angelo 的老东家facebook一样，，Quora重度使用MySQL。对于，把数据库里的数据