How can I use React Query with WebSockets?

How can I use React Query with WebSockets?

You can use React Query to manage server state while using WebSockets for real-time updates. Start by setting up a WebSocket connection and then use React Query's useQuery to fetch initial data.

What about handling real-time updates?

For real-time updates, you can use the onMessage event of the WebSocket to trigger a React Query mutation or invalidate queries to refresh the data.

Can you give me a code example?

Sure! Here's a simple example:

const { data, refetch } = useQuery('dataKey', fetchData);

useEffect(() => {
  const socket = new WebSocket('ws://your-websocket-url');
  socket.onmessage = (event) => {
    const newData = JSON.parse(event.data);
    queryClient.setQueryData('dataKey', (oldData) => [...oldData, newData]);
  };
  return () => socket.close();
}, []);