<% end -%>
<% end -%>
- keepalive 256;
+ keepalive 1024;
+ keepalive_requests 1024;
}
# Geo Map of tile caches
return 404;
}
+<% for i in 0..14 do %>
+<% if i == 0 -%>
+ # Default Fallback Location Handler (lowest)
location / {
+<% elsif -%>
+ # Dedicated zoom handler for caching
+ location /<%= i %>/ {
+<% end %>
proxy_pass http://tile_cache_backend;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_http_version 1.1;
proxy_ignore_headers Set-Cookie;
proxy_hide_header Set-Cookie;
+<% if i != 0 -%>
+ # Caching
+ proxy_cache "proxy_cache_zone";
+ proxy_cache_lock on;
+ proxy_cache_valid 200 1d;
+ proxy_cache_valid 404 15m;
+ # Serve stale cache on errors or if updating
+ proxy_cache_use_stale error timeout updating http_500 http_503 http_504;
+ # If in cache as stale, serve stale and update in background
+ proxy_cache_background_update on;
+ proxy_cache_min_uses 8;
+
+ add_header X-Nginx-Cache-Status $upstream_cache_status;
+<% end -%>
+
# Set a QoS cookie if none presented (uses nginx Map)
add_header Set-Cookie $cookie_qos_token_set;
<% if node[:ssl][:strict_transport_security] -%>
proxy_set_header Cache-Control $limit_http_cache_control;
proxy_set_header Pragma $limit_http_pragma;
}
+<% end %>
}