Thank you Agentzh.

I will look into that.

I have an associated question. I have a memcache cluster (multiple nodes). So I defined an

upstream memcached_pass_stream {
server node1:11211;
server node2:11211;
server node3:11211;
server node4:11211;
}

And I pass it
memcached_pass $scheme://memcached_pass_stream/;

I am using memcached cluster (AWS ElastiCache)

Q1 I hope this is the right way to integrate with multiple nodes.

Q2 If yes, what logic nginx follows to pick the nodes? I should use similar logic to set data else there might be many misses.

Regards
Amod