I think the Clojure answer to stateful data storage is "use Datomic". There's a big impedance mismatch between the functional world and the stateful (RDBMS) wo

I think the Clojure answer to stateful data storage is "use Datomic". There's a big impedance mismatch between the functional world and the stateful (RDBMS) world. Datomic extends the functional world all the way down to data storage. You can certainly use SQL, and it's not any worse than any other language (and in some ways a little better), but IME it's not Clojure-simple, either. It's still the most awkward part of all my Clojure programs. Clojure excels when you can avoid mutating state, and I think that's why people especially love it for web apps. It fits almost perfectly into that model.