Use tee (or equivalent) but limit max file size or rotate to new file

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I would like to capture output from a UNIX process but limit max file size and/or rotate to a new file.

I have seen logrotate, but it does not work real-time. As I understand, it is a "clean-up" job that runs in parallel.

What is the right solution? I guess I will write a tiny script to do it, but I was hoping there was a simple way with existing text tools.

Imagine:

my_program | tee --max-bytes 100000 log/my_program_log

Would give... Always writing latest log file as: log/my_program_log

Then, as it fills... renamed to log/my_program_log000001 and start a new log/my_program_log.

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