nginx: optimize locations (#19438)

* nginx: optimize locations

* nginx: don't use regex in locations

* nginx: optimize Cache-Control headaers

* nginx: use 404 error_page for missing static files

* nginx: sort locations

* nginx: add missing HSTS header

dist/nginx.conf

@@ -56,58 +56,104 @@ server {
     try_files $uri @proxy;
   }
 
-  location ~ ^/(emoji|packs|system/accounts/avatars|system/media_attachments/files) {
-    add_header Cache-Control "public, max-age=31536000, immutable";
+  # If Docker is used for deployment and Rails serves static files,
+  # then needed must replace line `try_files $uri =404;` with `try_files $uri @proxy;`.
+  location = sw.js {
+    add_header Cache-Control "public, max-age=604800, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
-    try_files $uri @proxy;
+    try_files $uri =404;
   }
 
-  location /sw.js {
-    add_header Cache-Control "public, max-age=0";
+  location ~ ^/assets/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
-    try_files $uri @proxy;
+    try_files $uri =404;
   }
 
-  location @proxy {
+  location ~ ^/avatars/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/emoji/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/headers/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/packs/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/shortcuts/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/sounds/ {
+    add_header Cache-Control "public, max-age=2419200, must-revalidate";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ~ ^/system/ {
+    add_header Cache-Control "public, max-age=2419200, immutable";
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    try_files $uri =404;
+  }
+
+  location ^~ /api/v1/streaming/ {
     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;
     proxy_set_header Proxy "";
-    proxy_pass_header Server;
 
-    proxy_pass http://backend;
-    proxy_buffering on;
+    proxy_pass http://streaming;
+    proxy_buffering off;
     proxy_redirect off;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection $connection_upgrade;
 
-    proxy_cache CACHE;
-    proxy_cache_valid 200 7d;
-    proxy_cache_valid 410 24h;
-    proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
-    add_header X-Cached $upstream_cache_status;
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
 
     tcp_nodelay on;
   }
 
-  location /api/v1/streaming {
+  location @proxy {
     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;
     proxy_set_header Proxy "";
+    proxy_pass_header Server;
 
-    proxy_pass http://streaming;
-    proxy_buffering off;
+    proxy_pass http://backend;
+    proxy_buffering on;
     proxy_redirect off;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection $connection_upgrade;
 
+    proxy_cache CACHE;
+    proxy_cache_valid 200 7d;
+    proxy_cache_valid 410 24h;
+    proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
+    add_header X-Cached $upstream_cache_status;
+
     tcp_nodelay on;
   }
 
-  error_page 500 501 502 503 504 /500.html;
+  error_page 404 500 501 502 503 504 /500.html;
 }