v2 release: Improved NGINX configuration for performance and compatibility

- Enhanced proxy buffering to optimize request handling.
- Improved gzip compression settings.
- Fixed rewrite rules to properly handle static content.
- Added resolver for better DNS resolution.
- Ensured proper trailing slash redirections.
- Updated proxy settings for better MinIO integration.

helm-chart/templates/_helpers.tpl

@@ -6,33 +6,40 @@ Generate the content for the NGINX configuration.
 server {
     listen 80;
     server_name {{ .name }}.{{ .host }};
-
+    
     gzip on;
     gzip_disable "msie6";
     gzip_vary on;
     gzip_proxied any;
     gzip_comp_level 6;
     gzip_buffers 16 8k;
-    gzip_types text/plain text/html text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
-
+    gzip_types text/plain text/html text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+    
     proxy_buffering off;
     proxy_intercept_errors on;
-
+    proxy_buffer_size 16k;
+    proxy_buffers 4 32k;
+    proxy_busy_buffers_size 64k;
+    
     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;
-
+    
+    resolver 1.1.1.1 valid=300s ipv6=off;
     proxy_hide_header x-amz-request-id;
     proxy_hide_header x-minio-deployment-id;
 
+    location ~ ^([^.?]*[^/])$ {
+        return 301 $1/;
+    }
+    
     location / {
-        # These rewrites are kept as in your original config.
         rewrite ^/$ /{{ $.Values.bucket }}/{{ .name }}/index.html break;
-        rewrite ^(.*)/$ /$1/index.html break;
+        rewrite ^/(.+)/$ /{{ $.Values.bucket }}/{{ .name }}/$1/index.html break;
+        rewrite ^/(.+)$ /{{ $.Values.bucket }}/{{ .name }}/$1 break;
         
-        # Use the parameterized backend URL.
-        proxy_pass {{ .minioURL }}/{{ $.Values.bucket }}/{{ .name }}/;
+        proxy_pass {{ .minioURL }}/{{ $.Values.bucket }}/{{ .name }};
         proxy_set_header Host {{ .minioHost }};
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -41,9 +48,9 @@ server {
         proxy_ssl_server_name on;
         proxy_ssl_verify off;
         error_page 404 {{ .errorPage }};
-
+        
         add_header Cache-Control "public, max-age={{ $.Values.maxAge }}, stale-while-revalidate={{ $.Values.staleWhileRevalidate }}" always;
     }
-    }
+}
 {{- end }}
 {{- end }}