[Feature] Automatic CDN invalidation for On Demand Revalidation

[conico974]

We should provide a way to automatically invalidate the CDN.

It should be a custom override and the default should be to use a dummy one that will do nothing (Cloudfront automatic CDN invalidation could incur very high cost if not done properly)

[sommeeeer]

this is a really good idea (was thinking about this some time ago), but should we limit it somehow? as you said this can result in really high cost if poorly setup. it can also be dangerous with malicious users.

we should use asterix: /mypath* where possible. for pages router it would look like this:

if (path === "/") {
  return `/_next/data/${process.env.NEXT_BUILD_ID}/index.json`;
}
return `/_next/data/${process.env.NEXT_BUILD_ID}${path}.json*`;

i think after much try and error, without that ending asterix it would not work in some cases.

for app router its just /mypath*

[conico974]

I don't think so.
The default would remain as it is, and if someone want to use it it's at their own risk.
And malicious users should never be able to trigger this unless this is explicitly allowed by the user.
As for the *, this is a cloudfront only issue/implementation.