No connections limit for now, but 100 connections at most from one host are recommended.
Note if there are many subscriptions in one connection, the connection can be closed easily, because the server will actively close the connection if the client cannot consume the update in time.
For your spot websocket v4 api. Related page: https://www.gate.io/docs/developers/apiv4/ws/en/#spot-websocket-v4.
I couldn't find the following information on the doc page. Could you add to the doc too?
Thanks