working on redundancy

nginx/nginx.conf

@@ -0,0 +1,34 @@
+upstream backend {
+    least_conn;
+    server node1:4000 max_fails=1 fail_timeout=5s;
+    server node2:4000 max_fails=1 fail_timeout=5s;
+    keepalive 32;
+}
+
+server {
+    listen 80;
+
+    location / {
+        proxy_pass http://backend;
+
+        proxy_http_version 1.1;
+
+        # WebSocket support (required for LiveView)
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+
+        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-Forwarded-Proto $scheme;
+
+        # Fast failure detection and automatic retry on the other node
+        proxy_connect_timeout 2s;
+        proxy_next_upstream error timeout http_502 http_503 http_504;
+        proxy_next_upstream_tries 2;
+        proxy_next_upstream_timeout 4s;
+
+        proxy_read_timeout 86400;
+        proxy_send_timeout 86400;
+    }
+}