Cache responded as both private and public

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Using cache-control developers/website owners can specify precisely how/where and when the resources are allowed to be cached.

Part of these options that can be configured are private and public, which define:

  • private that only browsers may cache this resource, meaning the best security as this is per users and proxy servers will ignore these resources.
  • public will allow proxies and servers in between to cache and re-use the file.

As is noted, these two differ quite a bit. And as such make no sense being used together, which would only confuse browsers and negate most of the benefits of specifying a specific type.

How do I fix this ?

Change the cache-control header to include only private or public, not both.


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