There's also additional considerations that weren't touched in the article, and they're not functional but architectural. Sometimes you have payloads that can'

There's also additional considerations that weren't touched in the article, and they're not functional but architectural. Sometimes you have payloads that can't fit in a traditional RDBMS, and SQL/Relational don't cluster/shard well. NoSQL bring convenient clustering/sharding to your data. Anecdote: an old team chose Cassandra solely for its admin-tools (which are really cool), even if we didn't actually need a NoSQL; I lost that battle, but I least we all learned something.