Why are synchronous activities recommended?

[barraponto]

from README.md:

The say_hello_activity is synchronous which is the recommended activity type (see "Types of Activities" below), but it can be async

However a few lines below, asynchronous activities are described as much more performant. Also, handling any sync tasks requires the Worker to be created with an explicit executor parameter.

It seems like async activities are expected and sync ones should be exceptional.

[tconley1428]

Largely I believe this relates to the frequency of issues we see users encounter with blocking the asyncio event loop, which can prevent the worker from performing any additional operations. This is not a concern with synchronous activities, so they can often be a safer option for folks. I would agree that the recommendation is a bit strong in that line and could use some more nuance.