Dude. A blog post on writing application on top of asyncio which may interchangeably use threads or async/await, and incrementally making the switch to asyncio

Dude. A blog post on writing application on top of asyncio which may interchangeably use threads or async/await, and incrementally making the switch to asyncio would be awesome. I work with a large-fintech platform which is partially powered by Python. Our old server was based around threads, queues, and socket multiplexing but we are gradually starting new applications in asyncio. I recently completed a project in aiohttp which has been fantastic. What are your thoughts on aiohttp vs tornado?