If you want something a little more live-like you could consider long-polling, where you request the data immediately and the server only responds when the information has changed, or the poll interval "times out". Once the poll is done, the client re-polls immediately and the process repeats.
There is a discussion of the topic here[^]. In the article he talks about a technology called SignalR, which will help you with the long polling stuff.
The answer will hugely depend on the source of data that is being served. If you have some source of data that you need to put on your webpage after a regular interval then it can be easily done using AJAX. in fact, you can do it using simple ASP.NETupdatepanel and timer control only.
Here is a small article that shows how to use the timer to keep the page updating after some interval. IN this demo application, only server time is being shown live to the user after certain time interval. you can simply show your data instead of that.
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