https response quite slow using NGINX for NodeJs application - node.js

Question

enter code hereI have a web application mapped with multiple domains. One of the domain is using SSL while other one is simple.
I tried to use NGINX with nodeJs. My HTTPs response is very very slow. Please have a look at the conf file and help me to get rid of this problem.
upstream myserver {
server 127.0.0.1:4502;
server 127.0.0.1:4500;
}
server {
listen 0.0.0.0:80;
server_name a.myserver.com;
access_log /var/log/nginx/nodetest.log;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://myserver/;
proxy_redirect off;
}
}
server {
listen 0.0.0:443;
server_name myapps.com;
access_log off;
ssl on;
ssl_certificate /mnt/drives/ssl_certificates/daffodilapps/ssl-bundle.crt;
ssl_certificate_key /mnt/drives/ssl_certificates/daffodilapps/ryans-key.pem;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://myserver/;
proxy_redirect off;

Answer 1

It seems likely that your node.js application is not a factor, since you access it the same way in the end. Still, you might want to validate that by doing a performance test for http vs. https against a static page. If it turns out that nginx SSL performance is still poor, you might try changing the cipher suites that nginx offers, per the advice in Nginx Performance Tuning for SSL.
Also, you don't list what kind of VM you are using, but you might also try upgrading to a non-shared-core VM if you're currently on a f1/g1. The extra (and dedicated) CPU should help SSL performance, which is also mentioned in the article when they switched from a micro to a regular EC2 VM.