I went back to look at some of the old code as my memory was hazy. It was tornado's implementation of the run_on_executor method that we used, which is used as

I went back to look at some of the old code as my memory was hazy. It was tornado's implementation of the run_on_executor method that we used, which is used as a decorator. https://www.tornadoweb.org/en/stable/concurrent.html#tornado.concurrent.run_on_executor https://www.tornadoweb.org/en/stable/concurrent.html#tornado...