PHP+Nginx Reduce TTFB

# 2 things got me great improvement (<100ms TTFB):

## Enable http2 in all of my SSL server blocks (needs nginx 1.9.5+)

server {
  listen 443 ssl http2;
  #rest of your config here
}

## Set up fastcgi_cache

In /etc/nginx/nginx.conf:

fastcgi_cache_path /etc/nginx-cache levels=1:2 keys_zone=phpcache:100m inactive=60m;
fastcgi_cache_key "$scheme$request_method$host$request_uri";
In your server’s .conf file likely in /etc/nginx/conf.d/modify the php handling block

location ~ [^/]\.php(/|$) {
  fastcgi_cache phpcache; # The name of the cache key-zone to use
  fastcgi_cache_valid 200 30m; # What to cache: 'Code 200' responses, for half an hour
  fastcgi_cache_methods GET HEAD; # What to cache: only GET and HEAD requests (not POST)
  add_header X-Fastcgi-Cache $upstream_cache_status; # Add header so we can see if the cache hits or misses
}

restart nginx sudo nginx -s reload

nginx: [emerg] "fastcgi_cache" zone "phpcache" is unknown in /etc/nginx/nginx.conf