It is blazing fast for me. I see from another response that this is a Node.js app but perhaps caching might also explain how fast this is. Also, today I have learned that jazz also means "have sexual intercourse with".
Got a great speedup when I added Redis. When a word is first requested, the JSON is put together from the Postgres database tables, then just stuff it in Redis for subsequent requests.
Since there have been so many requests, most common words are in Redis at this point.
