Async python is pretty popular nowadays. Many people think that websites with huge volume need async python to scale. Other people think that async python is greatly misunderstood and that it should instead be used only for specific use cases.

Given that reddit has huge volumes, I'm curious to know where reddit uses async python and where it does not.

Would anyone be able to give a few examples?

I assume that the chat feature uses async python and websockets.

How about the add comment feature, or add a new thread feature? Reddit must have an enormous amount of people adding comments/threads. I would be curious to know if Reddit can support this without async or if async is required to scale for these features.

/u/ketralnis I would appreciate your input.