On the old hosting provider we had the following location configured in nginx:

location ^~ /internal/replication {
   internal;
   alias /home/metabrainz/metabrainz.org/replication_packets;
 }

This allowed us to serve us replication packets for MusicBrainz directly through nginx without keeping uWSGI around for data transfer. This feature is called X-Accel.

With the way new host is set up it's slightly more complicated to set this up. Replication data might be in a volume which is hosted on a different server than nginx. One solution is to have a "wrapper" nginx for MetaBrainz website. So the connection will look like this:

nginx (on a gateway) <--> nginx (MeB-specific) <--> uWSGI