WordPress is the most popular CMS in the world. They released the initial version of WordPress in 2003. It introduces new features every year. On August 1, 2013, WordPress Heartbeat was initially introduced in WordPress version 3.6. It allows your browser to communicate with the server when you are logged into the WordPress dashboard.
WordPress Heartbeat offers great functionality, it helps in post revision tracking, auto-saving of posts while composing, and user session management. WordPress Heartbeat sends a continuous pulse, as the name indicates, using AJAX calls to perform periodic tasks. In this article, we will explain what is WordPress Heartbeat and how to reduce admin-ajax.php hits.