I imagine that most web devs run a version of the server on their local machines, which these days might mean one or more of mariadb, mongodb, couchbase, postgr

I imagine that most web devs run a version of the server on their local machines, which these days might mean one or more of mariadb, mongodb, couchbase, postgresql, rethinkdb, cassandra, together with redis, rabbitmq, ELK, all the backend services and the API gateway that manages them, consul and/or etcd/kube and/or swarm... It's easier to run the full environment in development than it is to worry about bugs introduced by differences between development and production.