Improve the real or perceived speed of the site, or monitor performance metrics.
If you want to cache the output of a render array differently depending on if the site is visited by a known crawler or not, this is the module you need.
Provide a submodule for Video Embed Field support with the
Ignore Page Cache lets you ignore query parameters that get filtered out of the Page Cache module.
Page Cache Ignore query parameters improves the performance of the page_cache module by removing client side variables from the cache key.