Little tricks with Heroku

Regularly (for example, once every 5 minutes) send requests to the application from within the application itself.

Using JavaScript it would look like this:

var http = require("http");
setInterval(function() {
    http.get("http://<your app name>.herokuapp.com");
}, 300000); // every 5 minutes (300000)

Use external ping sites that will check your site at specified intervals.

Examples of such sites are Pingdom , Uptime Robot , Kaffeine and others. The principle is simple. We go in, register (if necessary), indicate the site and time interval and apply the settings.

Use Heroku Newrelic addon This plugin is designed to monitor and notify about site crashes, but as a useful “side effect” it will prevent the application from falling asleep. I settled on this method, which, in my opinion, is the most beautiful. I will describe it in more detail.

To install the addon, you need to follow this link and click the "Install New Relic APM" button . In the window that opens, you need to select a tariff plan and the name of the application to which this addon will be applied.

Then press the "Provision add-on" button .

After installation, New Relic will be available on the application settings page in the list of installed addons.

Click on the link and you will be taken to the add-on settings page.

Go to the "Synthetics" tab and click the "Add new" button.

In the window that opens, in the “Enter the details” section , indicate an arbitrary name of the monitor and the address of the site that we will monitor. We select the location from where the site will be checked in "Select monitoring locations" .

We indicate the frequency of checking in “Set the shedule” (I set it to 15 minutes) and the email for notifications in “Get notified”.

After all the settings, don’t forget to click the “Create monitor” button.