What is s-maxage and where I can check its value for my Cloudimage token?

The s-maxage directive controls the CDN cache expiration period.

In case you are not familiar with caching definition, here is what means s-maxage :

s-maxage ('s' means seconds) — Indicates that in shared caches, the maximum age specified by this directive overrides the maximum age specified by either the max-age directive or the Expires header field. The s-maxage directive also implies the semantics of the proxy-revalidate response directive. Browsers ignore s-maxage

Example on how s-maxage works:

• an image with s-maxage=2592000 would be cached in the CDN server for a period of 2592000 seconds = 1 month. After that, the CDN will delete the cached image. If the users request the image again, the CDN will get a new, fresh copy of the image and will cache it again for a period of 1 month.

If you want to check what is the s-maxage value for your Cloudimage token, please open the Cloudimage Admin panel in menu Image Settings -> tab Caching:

In cases when the s-maxage value needs to be changed, please contact our Support team.

For additional information regarding the Image Cache we suggest you to read the following articles:

• • How to set CDN caching up in Cloudimage?
  • How does Cloudimage accelerate images?
  • How do I flush images cached in Cloudimage (or Filerobot) and the CDN?