Write Fast Apps Using Async Python 3.6 and Redis
> we make heavy use of asyncio because it’s more performantmore performant than....what exactly?   If I need to load 1000 rows from a database and splash them on a webpage, will my response time go from the 300ms it takes without asyncio to something "more performant", like 50ms?  Answer: no. async only gives you throughput, it has nothing to do with "faster" as far as the Python interpreter / GIL / anything like that.   If you aren't actually spanning among dozens/hundreds/thousands of network connections, non-blocking IO isn't buying you much at all over using blocking IO with threads, and of course async / greenlets / threads are not a prerequisite for non-blocking IO in any case (only select() is).it's nice that uvloop seems to be working on removing the terrible performance latency that out-of-the-box asyncio adds, so that's a reason that asyncio can really be viable as a means of gaining throughput without adding lots of latency you wouldn't get with gevent.   But I can do without the enforced async boilerplate.   Thanks javascript!