Introduction

A heartbeat can be used to monitor background processes that should regularly trigger. The heartbeat can be linked to an external URL. This URL is pinged when the heartbeat is triggered.

In WordPress an overview of triggered heartbeats, timestamps and environment are shown in the Tools/Heartbeat status menu.

Examples

To trigger a heartbeat

use LL\Heartbeat\Heart;
Heart::beat('START_UPDATE_ALL', 'Updates all objects.');

To trigger a URL ping

Add a define to wp-config.php which links the heartbeat context to a URL. The context is prefixed with LL_HB_ by default.

As an example:

In envoyer.io you can set a heartbeat under Project/Heartbeats/Add heartbeat. Here you configure a name and the timing interval you expect the heartbeat to trigger. The resulting URL is added to wp-config.php.

define('LL_HB_START_UPDATE_ALL', 'http://beats.envoyer.io/heartbeat/#####');