Whenever I evaluate a technology stack for microservice architecture viability, I implement the same feature identical polyglot persistent microservice then run it through the same load test as all the others. In that way, I can compare and contrast these various technology stacks. I blog about the results here.
So far, I have covered clojure on ring, scala on finatra, java on dropwizard, javascript on node, python on flask, scala on scalatra, java on spring boot, go, and typescript on apollo (graphql).