How to suck an entire postgres db into Clojure datastructures in memory

pg.clj

(ns ormclj.pg
  (:require [clojure.java.jdbc :as sql]))

(defn pg-db
  [hostname port db-name user passwd]
  {:classname   "org.postgresql.Driver"
   :subprotocol "postgresql"
   :subname     (str "//" hostname ":" port "/" db-name)
   :user        user
   :password    passwd})

(def conn (pg-db "localhost" 5432 "dbname" "user-name" "password"))

(def tables (sql/with-connection conn
              (sql/with-query-results rs ["SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';"]
                (doall (for [row rs] row)))))

(def db
  (reduce
   (fn [res t]
     (assoc res
       (keyword (:table_name t))
       (sql/with-connection db
         (sql/with-query-results rs [(str "select * from " (:table_name t))]
           (doall (for [row rs] row))))))
   {}
   tables))