I know it's been a few days but what was the driver behind this question? My company uses CH and has near-real-time data being added (~5min delay from live), is this a problem and/or is there something about CH that doesn't play nice with this method? Or were you just interested in this particular case of inserting real time data?
Actually not, but we are ingesting a whole day of EOD market data (thousands of symbols, millions of timesales, billions of books events) in less than a couple of hours. This is 4x faster than the pace of the realtime market (not counting the extended hours due to the limited volume).