If you need limited document storage capabilities I'd recommend just using S3 alongside a traditional RD like PostgreSQL. You can simply store object IDs in the

If you need limited document storage capabilities I'd recommend just using S3 alongside a traditional RD like PostgreSQL. You can simply store object IDs in the primary database but the actual document/data in S3. I used this methodology for a cloud platform I built that required the ability to store large 3D models uploaded by users. Metadata was stored in PostgreSQL then the actual data in S3. This also facilitated generating a acquisition URL on the server which could be triggered client-side so that after initial creation, there was almost no primary server overhead (bandwidth or storage) for retrieval.