March 4, 2022 . 1 MIN READ
The difference is documented here:
As opposed to restart, which kills and restarts the process, reload achieves a 0-second-downtime reload.
The latter means (found here):
With reload, pm2 restarts all processes one by one, always keeping at least one process running.
It also states that:
If the reload system hasn’t managed to reload your application, a timeout will fallback to a classic restart.
Reference: https://pm2.keymetrics.io/docs/usage/cluster-mode/#reload
