Question

Worker_connections is a directive contained within

Answer 1

Suppose Nginx is doing CPU-concentrated work, for example, SSL or gzipping and you have at least 2 CPUs/centers, at that point you may set worker_processes to be equivalent to the quantity of CPUs or centers.

In case you are serving a great deal of static documents and the aggregate size of the records is greater than the accessible memory, at that point you may expand worker_processes to completely use plate transfer speed.