Create a multiplayer game on Socket.IO - Is it a good idea?

Question

Game development

Hello. I have been working with Socket.io for the web and have just downloaded Socket.IO for Unity from the Asset Store. So, I'm planning to get serious about creating a multiplayer game with this technology? The question is, is this a good idea? I mean, will socket io handle an influx of 1000, 5000 or more players? What pitfalls can be?
I don't choose from ready-made solutions like Photon, GameSparks, SmartFox because I want to develop the server myself, what a great achievement :) . Yes, and I don’t want to understand these technologies, but I already have experience with socket io, I created a small project on localhost. And after development, place it on any hosting and accept players.

Answer 1

will it pull

how to write it will be, a little more than completely depends on the code.
Although taking a ready-made solution like socket.io is in itself a huge overhead.
In reality, 1000-5000+ simultaneous connections is a lot and very often receive / send, and it's much cheaper to use a websocket without any bells and whistles on top, and plus everything in binary mode.