I am grateful for Redis and I agree you pioneered a lot of data access patterns in production for a lot of people, myself included. I've used Redis for 10 years

I am grateful for Redis and I agree you pioneered a lot of data access patterns in production for a lot of people, myself included. I've used Redis for 10 years, at times for use cases as you mention, for real time feature engineering for ML as well. The API is just different compared to SQL, which is a downside for many. There's modern advancements in the space with IVM and more databases are supporting probabilistic data structures.