Yeah, super annoying. They likely have some content marketing campaign that shares old posts at various intervals.

Looks like it was published 6 months ago - 'Thu, 11 May 2017 09:14:20 -0400' to be precise.

Source: The /rss feed for the blog, which shows the following for this post.

    <item>
      <title>Server-side I/O Performance: Node vs. PHP vs. Java vs. Go</title>
      <description>Understanding the Input/Output (I/O) model of your application can mean the difference between an application that deals with the load it is subjected to, and one that crumples in the face of real-world uses cases. Perhaps while your application is small and does not serve high loads, it may matter far less. But as your application’s traffic load increases, working with the wrong I/O model can get you into a world of hurt.</description>
      <pubDate>Thu, 11 May 2017 09:14:20 -0400</pubDate>
      <link>https://www.toptal.com/back-end/server-side-io-performance-node-php-java-go</link>
      <guid isPermaLink="false">server-side-io-performance-node-php-java-go</guid>
      <dc:creator>BRAD PEABODY, DEVELOPER @ TOPTAL</dc:creator>
      <media:content url="https://uploads.toptal.io/blog/post_image/120386/02-facebook-1200x627-494cb5ae75d16fa39251cb8b7d6ae877.jpg" medium="image"/>
    </item>

Source: https://www.toptal.com/developers/blog.rss