examples: Improve HTTP/2 performance with Nginx

Closes #1106

Author: Acconut

examples/nginx.conf

@@ -38,6 +38,10 @@ server {
     ssl_session_cache shared:SSL:5m;
     ssl_session_tickets off;
 
+    # Tune settings for fast HTTP/2 uploads
+    # https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
+    http2_body_preread_size 512k;
+
     server_name tusd.tusdemo.net;
 
     # certbot will place the files required for the HTTP challenge in the