Why is the data on the page not updating after making changes?

Question

Nginx

Good day.

The question is the following. There is a page that is available at two addresses:
- locally 192.168.0.126
- from outside 109.195.XX.XXX:82



1. I make changes on the page, for example, I ask the service (by sending a text command) to set an alarm (turn it on or off).

1.1 Locally, the on/off alarm slider instantly changes its state.
1.2 from the outside, it takes about 3-5 seconds before the on/off slider changes its state.

2. I make changes on the page, for example, I ask the service (by sending a text command) to change the alarm time

2.1 on the Local page - the alarm time immediately takes the specified values
2.2 on the page accessible from the outside - the alarm time remains unchanged. you have to press F5

It's definitely not the browser cache. I suspect that you need to dig into the nginx settings. tell!!! how to make it so that the time also changes its value when accessing the page from the outside? perhaps you need to refresh the page forcibly, but in this case, by what means

Answer 1

https://learn.javascript.ru/websockets