[philplckthun]

There are solutions to simply turn GraphQL requests into (traditional) CDN-cacheable requests. Usually this would be done using (Automatic) Persisted Queries, where a query is not only requested as a GET request, if it's not a mutation, but it'd also do so using a hash rather than an entire query.

This has a couple of limitations that you'd also expect from a CDN cache for REST requests. However, I believe the interesting part about GraphCDN is that it can do more to look at the exact queries and mutations that are run to invalidate queries more precisely.

So, it's likely worth saying that it's not that CDN caching GraphQL is hard, but getting invalidation and a high cache hit rate (just as with REST APIs) is hard.