Priorities for DataCache and Request Memoization

[iMUngHee]

When you check the official documentation of NextJS, you can find the following illustration.

Source: https://nextjs.org/docs/app/building-your-application/caching#request-memoization

According to the illustration, Request Memoization is applied before DataCache, meaning that if memoization occurs, cacheHandler is not accessed.

However, the actual implementation is structured as follows:

patchFetch(dedupeFetch(fetch))

This means that DataCache is checked and accessed before Request Memoization, which differs from what is explained in the official documentation.

Is this behavior intentional?
I think it should be applied as follows to work as the illustration shows.

dedupeFetch(patchFetch(fetch))