concatenate dynamic chunks

[Shubhank Gaur]

The ffmpeg docs for concat lists the following way
ffmpeg -f concat -i mylist.txt -c copy output

The mylist.txt file contains file like
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'

What I am looking is for a way to do this concat in a on-the-fly way where the number of files can keep increasing in realtime, for example in livestreaming
I will be sending chunks of video (mp4 files) of 10 seconds each to my server and want to concat/stitch those incoming chunks together to output to a RTMP/RTSP stream (for livestreaming)

If concat is not the proper way to do this, please suggest alternatives.

Really interested to know how people use the above concept (I hope its how it works) to send video chunks from mobile device for livestreaming