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DB is needed period, unless you want to go blockchain, DHT route, which is not the way to go with most applications.

DB isn't needed. Our microservices pipeline either uses MQ, EFS or S3 for the destination for another pipeline to pick up. Unless you count those 3 as DBs ;)

Yeah I would say those are key value document based DB. Just silicon valley hipster coming up with cool names to call something different so it is a bit easier for developer to use. Anything does permeant storage are DB.

You could argue S3 is a key-value store, however ActiveMQ is a message queue, and EFS is essentially NFS.

I certainly don't agree that 'anything that does permanent storage is a DB'. Not many people would call their hard drive a 'database'

I personally think that they all have a place and are very useful tools for certain situations, depending on the problem.

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