My (small) team spent a year rewriting one simple clojure/mongo CRUD microservice into Java/Postgres. The process was anything but easy. Interestingly, even a

My (small) team spent a year rewriting one simple clojure/mongo CRUD microservice into Java/Postgres. The process was anything but easy. Interestingly, even a simple CRUD can be made in a complex way in Clojure which makes it difficult to understand for non-clojure devs. Data migration path is also a huge issue (and the major reason it took so long). I believe the original service took 6 months to develop (including all iterations of the design/spec), a "simple" 1:1 rewrite a double of that.