Are real-time applications made through web sockets?

Question

PHP

Well, in fact, everything is said in the title of the question) If a little more in detail: I want to configure the launch of the script on the server by cron and so that the site is updated for users without manually reloading the page...

Answer 1

yes, real-time applications are made through websockets, only cron will not work

Answer 2

You can use ajax via setInterval :)

Answer 3

It depends on the specifics of your application, if you only need to send content one-way, then html5_serversentevents is well suited, for example, for news feeds or event notifications, and if two-way communication, then yes WS (chats, online games). It is possible to combine these two directions

Answer 4

Or web sockets or https://ru.wikipedia.org/wiki/Server-sent_events SSE when something happens on the server you send this data to the client.