While a complete re-write can be fun, in my experience it's usually not the best course of action. In decreasing order of most bang for your buck (your mileage

While a complete re-write can be fun, in my experience it's usually not the best course of action. In decreasing order of most bang for your buck (your mileage may vary) * Profile the code, clean up the hot paths in the native language. * If it makes sense, implement as a c-extension * Restructure your application to handle concurrency/parallelism. Lots of options to try here; thread pools, external task queues, break your application into multiple services. * Re-write one of the smaller services you spun out in the language of your choice. Edit: formatting