php - How to get response from server every second in JSON? -

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i want response server every 1 second, output contain value need process in front end.

in backend using queries read data mysql , return me output.

things have tried:

  1. ajax
  2. webserver events
  3. amazon cloudfront

none of these work me. takes 3-4 seconds me response,

classic example see working (getting output in 1 sec)

http://madbid.com

please let me know if has solution this


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