If the production environment is single-core, can only one instance of node program be started?
It doesn’t make sense if there are too many starts?
If vps single core 512M single instance can support about how many users use it at the same time?
On a single-core Central Processor, not only one node instance can be started, but there is no problem if there are ten or eight instances.
Multiple processes will occupy Central Processor in a time-sharing manner. Since the switching frequency is very fast, it looks as if they are running at the same time.
Single core 512M single instance can support concurrency of the order of 100.