build's html page - refresh rate

Hi,

I would like to minimize status page fails. So I think, I add a switch 
"--html_upd_rate" for page generation/update, and a possybility to set a 
refresh rate in html page itself. With generation is everything clear, 
but refresh rate once changed should be stored somewhere. And not only 
for one session. So I thought about cookies.
Now I would like to know - do we need that feature at all? If yes, are 
the cookies OK or there are some better alternatives?
Best regards,

Vladimir