# Upstream configuration for load balancing # Backend FastAPI services upstream roa_backend { server roa-backend:8000 max_fails=3 fail_timeout=30s; keepalive 32; } # Frontend services (for direct access if needed) upstream roa_frontend { server roa-frontend:3000 max_fails=3 fail_timeout=30s; keepalive 32; } # Health check backend upstream health_backend { server roa-backend:8000; keepalive 2; }