The WordPress Heartbeat API is a JavaScript-based API that facilitates communication between your browser and the server.

It allows WordPress to send and receive real-time data, such as autosave revisions, plugin notifications, and session management. The API essentially helps in keeping your browser session up to date with the server, allowing you to experience certain real-time functionalities.

The Heartbeat API works by making periodic requests from your browser to the server. By default, it sends a POST request to the admin-ajax.php file every 15 seconds on the admin dashboard and every minute on post edit pages.

This can create unnecessary server requests, leading to increased server load and potential conflicts with other plugins or themes.

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Muhammad Tamzid, the founder of WPTechnic, is a WordPress Enthusiast with a passion to help beginners learning WordPress. Also managing WPrevival, a 24/7 WordPress Website Development, Maintenance & Security Service company.

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