Prerender Installation to Debian with Nginx Proxy and Caching

install.sh

# Prerender kurulumu

sudo locale-gen UTF-8
sudo apt-get update
sudo apt-get install -y curl
curl -sL https://deb.nodesource.com/setup_5.x | sudo -E bash -
sudo apt-get install -y nodejs build-essential libfontconfig nginx-extras
sudo npm install -g phantomjs
sudo npm install -g prerender
sudo npm install -g pm2

echo “export LC_ALL=en_US.UTF-8” >> ~/.bashrc
echo “export PRERENDER_NUM_WORKERS=4” >> ~/.bashrc
source ~/.bashrc

sudo dpkg-reconfigure locales

pm2 start prerender

# copy nginx configuration
sudo cp prerender.conf /etc/nginx/sites-enabled/.
sudo /etc/init.d/nginx restart

prerender.conf

lua_shared_dict expire_queue 10m;

proxy_cache_path  /tmp/nginx/ levels=1:2   keys_zone=default:10m;

server {
    listen 80;
    server_name prerender.mydomain.com;

    location / {
        header_filter_by_lua '
      if ngx.header["X-Expire-Content"] then
        ngx.log(ngx.INFO, "Backend sent invalidation header, adding to the queue " .. ngx.header["X-Expire-Content"])
        ngx.shared.expire_queue:add(ngx.header["X-Expire-Content"],1)
      end
    ';

    set_by_lua $http_cache_purge '
      local expire = ngx.shared.expire_queue:get(ngx.var.uri)
        if expire then
          ngx.log(ngx.INFO, "Removing URL from queue and invalidating, " .. ngx.var.uri)
          ngx.shared.expire_queue:delete(ngx.var.uri)
        end
        return expire
      ';

    add_header X-Cached $upstream_cache_status;
    proxy_cache_bypass $http_cache_purge;
    proxy_cache default;
    proxy_cache_valid 200 302 72h;

        proxy_pass http://127.0.0.1:3000;
    }
}

For client config use https://gist.github.com/thoop/8165802