Nginx 1s microcaching config for Hatch.js.

gistfile1.nginxconf

events {
    worker_connections  1024;
}

http {
    # Set cache dir
    proxy_cache_path /var/cache/nginx levels=1:2 
                     keys_zone=microcache:5m max_size=1000m;

    # Virtualhost/server configuration
    server {
        listen   80;
        #server_name  *;

        # Define cached location (may not be whole site)
        location / {
     
            # Setup var defaults
            set $no_cache "";
     
            # If non GET/HEAD, don't cache & mark user as uncacheable for 1 second via cookie
            if ($request_method !~ ^(GET|HEAD)$) {
                set $no_cache "1";
            }
     
            # Drop no cache cookie if need be
            # (for some reason, add_header fails if included in prior if-block)
            if ($no_cache = "1") {
                add_header Set-Cookie "_mcnc=1; Max-Age=2; Path=/";            
                add_header X-Microcachable "0";
            }
     
            # Bypass cache if no-cache cookie is set
            if ($http_cookie ~* "hatch.nocache=1") {
                set $no_cache "1";
            }
     
            # Bypass cache if flag is set
            proxy_no_cache $no_cache;
            proxy_cache_bypass $no_cache;
     
            # Point nginx to the real app/web server
            #proxy_pass http://unix:/tmp/app.socket:;
            proxy_pass http://localhost:3000;
     
            # Set cache zone
            proxy_cache microcache;
     
            # Set cache key to include identifying components
            proxy_cache_key $scheme$host$request_method$request_uri;
     
            # Only cache valid HTTP 200 responses for 1 second
            proxy_cache_valid 200 1s;
     
            # Serve from cache if currently refreshing
            proxy_cache_use_stale updating;
     
            # Send appropriate headers through
            # proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-HOST $host;
            proxy_set_header hatchhost $host;
     
            # Set files larger than 1M to stream rather than cache
            proxy_max_temp_file_size 1M;
     
            # Custom logging
            # log_format custom '$remote_addr - $remote_user [$time_local]  '
            #            '"$request" $status $body_bytes_sent '
            #            '"$http_referer" "$http_user_agent" nocache:$no_cache';
            access_log  /var/log/nginx/access.log;
            error_log   /var/log/nginx/error.log;
        }
    }
}