When a user places an order, how can PHP provide real-time reminders in the background?

Question

Ajax polling obviously won't work, which will put a lot of pressure on the server, so I would like to ask if there is a better method that can run normally in a big data environment

Answer 1

You can use node to create a message push service based on socket.io.

Answer 2

Use Server Push, such as websocket.

For PHP, it can be combined with other languages, or it can be implemented using Workerman or Swoole.

Answer 3

Websocket is pushed directly to the client