Caching Nginx Conf for Phabricator

nginx.conf

user www-data;
worker_processes 4;

error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;

events {
  worker_connections 1024;
}

http {
  include /etc/nginx/mime.types;

  access_log off;

  default_type application/octet-stream;

  sendfile on;
  tcp_nodelay on;
  tcp_nopush off;

  reset_timedout_connection on;

  server_tokens off;

  map $request_uri $no_cache {
    default         1;
    ~^/file/data/   0;
    ~^/file/xform/  0;
    ~^/res/pkg/     0;
  }

  # Cache up to 100G of responses and expire after 1 month of not being used
  fastcgi_cache_path /var/lib/nginx/phab levels=1:2 keys_zone=phab:128m inactive=1M max_size=100G;
  fastcgi_temp_path /var/lib/nginx/temp 1 2;

  gzip on;
  gzip_types application/json text/css text/javascript;
  gzip_proxied any;
  gzip_vary on;

  client_max_body_size 100M;

  server {
    listen 80 default_server;
    server_name phabricator.example.com;

    root /opt/phabricator/webroot;

    location / {
      expires max;

      try_files $uri /index.php?__path__=$uri&$query_string;
    }

    location ~ ^/res/[a-f0-9]+(/.*) {
      expires max;

      try_files $1 /index.php?__path__=$uri&$query_string;
    }

    location = /index.php {
      if ($args !~ __path__) {
        set $args __path__=$uri&$query_string;
      }

      include fastcgi_params;

      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

      # Only cache responses according to map $no_cache
      fastcgi_no_cache $no_cache;
      fastcgi_cache_bypass $no_cache;

      fastcgi_cache_key $request_uri;
      fastcgi_cache phab;
      # Cache 200 301 302 for 1M
      fastcgi_cache_valid 1M;
      # Respond with stale if updating cache or some errors
      fastcgi_cache_use_stale error timeout updating http_500 http_503;
      # Prevent stampede for same resource to backend
      fastcgi_cache_lock on;
      # Ignore caching headers from phab
      fastcgi_ignore_headers Expires Cache-Control;

      fastcgi_pass unix:/tmp/phabricator.sock;
    }
  }
}