hi @rudymartin and @akcoder
Thank you so much for your explanation and support.
yes, I have 1 extension script to call HTTP POST to an external application (when CPE sends 0 BOOTSTRAP).
I changed the MAX_CONCURRENT_REQUESTS to 300 and no Overload worker happens anymore.
However, I met another issue with MongoDB (exactly same logs as below issue)
Can you share guidance on how to troubleshoot more?
Thank you~