How to set up a web server for GPS monitoring?

Question

satellite navigation

Good afternoon. Advise how to organize GPS-monitoring for a small company.
Pretty easy to implement with java.net.ServerSocket + Mysql + PHP + Google Maps API.
But I want realtime solutions. That is, when data arrives at the server, in the browser, change the position of the point immediately.
It is possible to load AJAX by timeout, but this is a crutch that loads the server.
You can use websockets, but how to find out the moment of insertion in the database.
Besides, I want to learn something new.
How are these issues being dealt with right now?
Whether probably at the same time not to leave from SQL ?

Answer 1

Take a look at the data bus

Answer 2

Look at comet technology for server-initiated sending data to the browser.