Enable the private datasets
The code is already present to pass the token, but it's disabled in the code (hardcoded):

https://github.com/huggingface/datasets-preview-backend/blob/df04ffba9ca1a432ed65e220cf7722e518e0d4f8/src/datasets_preview_backend/cache.py#L119-L120

- [ ] enable private datasets and manage their cache adequately
- [ ] separate private caches from public caches: for authenticated requests, we need to check every time, or at least use a much lower TTL, because an access can be removed. Also: since a hub dataset can be turned private, how should we manage them?
- [ ] add doc. See https://github.com/huggingface/datasets-preview-backend/commit/f6576d5639bcb16fc71bf0e6796f3199124ebf49
Enable the private datasets: The code is already present to pass the token, but it's disabled in the code (hardcoded):

https://github.com/huggingface/datasets-preview-backend/blob/df04ffba9ca1a432ed65e220cf7722e518e0d4f8/src/datasets_preview_backend/cache.py#L119-L120

- [ ] enable private datasets and manage their cache adequately
- [ ] separate private caches from public caches: for authenticated requests, we need to check every time, or at least use a much lower TTL, because an access can be removed. Also: since a hub dataset can be turned private, how should we manage them?
- [ ] add doc. See https://github.com/huggingface/datasets-preview-backend/commit/f6576d5639bcb16fc71bf0e6796f3199124ebf49