How to create real time notifications system in php and ajax

Question

I wonder how social media websites pop up a notification for every action that happens on your timeline.

Am in need real-time notification system keeps track of every action you and your friends do on these social channels. Notifications form a big part of the real-time engagement feature of these platforms. Even you are not online, you could still receive these notifications.

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– ChristianB, Commented Dec 30, 2020 at 18:50

Ian · Accepted Answer · 2020-12-30 15:13:21Z

1

There are a few ways to achieve this.

Long polling Make an HTTP request to the backend, the backend will then hold this request until there is a message that has to be sent to the client. (this is an older way but is still in use)
Push API Quite new, has pretty decent support. Find more info here: https://developer.mozilla.org/en-US/docs/Web/API/Push_API
Websockets Set up 2 way communication with the server. PHP is really bad at this imo and it's overkill if you're just trying to send notifications.

Both Long polling & Push API are a good solution these days depending on which browsers you need to support.

answered Dec 30, 2020 at 15:13

Ian

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