I just saw it! I asked a question (https://news.ycombinator.com/item?id=42180611 https://news.ycombinator.com/item?id=42180611) and it seems that durability and

I just saw it! I asked a question (https://news.ycombinator.com/item?id=42180611 https://news.ycombinator.com/item?id=42180611) and it seems that durability and consistency are implemented at the caching layer. Basically an in-memory database which uses S3 as cold storage. Definitely an interesting approach, but no transactions AFAICT.