Apollo-feature-requests: Bypass cache on RESTDataSource get method

[mNalon]

• [x] question
• [x] feature

Hi,

I have a use case where I know some of my endpoints will never have a cache-control header, then the responses from these endpoints are not supposed to be cached on redis by my RESTDataSource implementation.

I noticed that in line 22 of the HTTPCache module a key is always checked to try hit some cached value.

    const entry = await this.keyValueCache.get(`httpcache:${cacheKey}`);

Is there any intention to have an available option that allows bypassing this behavior on get method of the RESTDataSource? I think this would be a good option for these cases where it is not necessary to check a cache key before every fetch, given that the value will never be found in the cache.

[ericclemmons]

This has come up for our team as well.

I'd like to see two of the following changes, and would send a PR if approved:

1. When !cacheKey, skip caching entirely.
2. Don't prepend httpcache: if I specify a key. Corporations have key naming requirements we have to follow.