| id | title | sidebar_label |
|---|---|---|
staticpagecache |
Static pages caching |
Static pages caching |
Statically rendered pages (i.e. HTML pages that are uploaded to S3) have the following Cache-Control set:
cache-control: public, max-age=0, s-maxage=2678400, must-revalidate
s-maxage allows Cloudfront to cache the pages at the edge locations for 31 days.
max-age=0 in combination with must-revalidate ensure browsers never cache the static pages. This allows Cloudfront to be in full control of caching TTLs. On every deployment an invalidation/* is created to ensure users get fresh content.