Do I need to unsubscribe from the socket from the react when componentWillUnmount?

Question

Socket.io

Tell me, please, is it necessary to unsubscribe from the socket from the react when componentWillUnmount, if subscribed in the same component in componentDidMount? If you do not unsubscribe, will memory be clogged with garbage on each transition along the route, which the garbage collector on the server with the node cannot clean up?

Answer 1

Look in the browser in the network-> ws tab.
How much it clogs up, if every time you enter the component a new instance of the socket connection is created, then of course you need to cut it down.