Ajax request running in background every 5 seconds

[KangJL]

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Maximum volume of AJAX requests allowed

I wish to use AJAX post requests to fetch audio/video blobs from the user every N seconds. This site is only for personal testing purposes, so at most only one or two people will be using the site at at the same time. My question is, what is the maximum alowed value of N that I can use without getting banned? 0.5? 1.0? 5.0? Kindly clarify. Thanks in advance.