This is a higher level, i.e. I just need avenues to explore here, question. I'm trying to set up an NGINX load balancer, behind which sit two different NGINX VPSs. Neither of the backends is a failover, I'm just doing round robining as a way to teach myself some basic load balancing. My question is, how I sync the two backends? How do I ensure that if I upload to wp-uploads on backend1, backend2 also gets the file?
Any high level guidance is great, I'll do the rest. Thanks.