Cache behavior

SVG embed responses include:

Cache-Control: public, max-age=300, stale-while-revalidate=3600
ETag: "..."

What this means

• Clients can reuse the SVG for five minutes.
• Stale responses can be served while the cache refreshes.
• Conditional requests with If-None-Match can receive 304.

Practical guidance

Do not force-refresh embeds more often than the cache window. Repository metrics update over time, so repeated calls will not create instant new chart data.