Next.js fetch response does not indicate whether the data is cached or freshly fetched

[Melly5]

Goals

1. get info, if fetch request response is fresh or came from cache

Non-Goals

No response

Background

When logging the response of a fetch request in Next.js, we get the following information:

{
cache: 'force-cache',
next: { tags: [ '/project/tag' ] },
url: 'https://request-url',
method: 'GET',
headers: { ... }
}
As shown, the only cache-related detail available is the caching strategy itself. However, in my case I need to determine whether the data is fresh — that is, whether this was a new request or a cached response. For example, I want to record performance metrics and measure the full request duration, but only when the data is retrieved from the origin and not served from cache.

I think its main usage would be for collecting metrics or separate logic for data

Proposal

get it in separate field, or some flag in header