This page uses stale-while-revalidate caching strategy.
Cache headers: s-maxage=60, stale-while-revalidate=30
Content is cached for 60 seconds. After that, stale content can be served for up to 30 additional seconds while the cache is being updated in the background.
12/8/2025, 6:03:20 PM
ISO: 2025-12-08T18:03:20.291Z
Image URL: https://images.dog.ceo/breeds/mountain-bernese/n02107683_4884.jpg
This demonstrates the stale-while-revalidate caching pattern.