Google's web rendering service caches all resources for up to 30 days, helping to preserve a site's crawl budget while rendering pages effectively.
Crawling resources for rendering can reduce a site's crawl budget. WRS caches every referenced resource, allowing other tasks to be prioritized during crawling.
Gary Illyes expressed caution in stating a specific cache duration, fearing it might confuse users or lead to future discrepancies regarding caching timelines.
Martin Splitt emphasized the importance of fingerprinting JavaScript files since they update often and specified that WRS caching applies primarily to resources, not rendered HTML.
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