emqx4.3/examples/overload_protection.conf.example

##--------------------------------------------------------------------
## Overload Protection
##
## Monitoring the load of the system and temporarily disable some features when the load is high
##--------------------------------------------------------------------
## Note: This is an example of how to configure this feature
##       you should copy and paste the below data into the emqx.conf for working

## Note: Do not modify this unless you know what this is for
overload_protection {
    ## set true to enable this
    enable = false

    ## Maximum duration of delay for background task execution during high load conditions
    backoff_delay = 1

    ## When at high load, skip forceful GC
    backoff_gc = false

    ## When at high load, skip process hibernation
    backoff_hibernation = true

    ## When at high load, close new incoming connections
    backoff_new_conn = true
}