How to change the default options for useQuery in react- query ?

In React Query, the useQuery hook enables you to fetch, cache, and update data from asynchronous sources within your application. If you wish to modify the default configuration of useQuery, there are several approaches you can take:

1. In a single useQuery call:

You can directly pass a configuration object when calling useQuery to override the default settings. For example:

jsx
const { data, error, isLoading } = useQuery('todos', fetchTodos, {
  // Override default configuration
  refetchOnWindowFocus: false,
  staleTime: 5000, // 5 seconds
  cacheTime: 1000 * 60 * 60 * 24, // 24 hours
  // Other configurations...
});

In the above example, refetchOnWindowFocus is set to false to prevent automatic data refetching when the window is focused, staleTime is set to 5 seconds, meaning data is considered fresh for 5 seconds, and cacheTime is set to 24 hours, specifying the duration for which cached data is retained.

1. Setting global default configuration with QueryClient:

If you want to set default configuration for all useQuery calls across your application, you can pass a configuration object when creating a QueryClient instance. For example:

jsx
import { QueryClient, QueryClientProvider } from 'react-query';

// Create a custom default configuration
const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      // Global default configuration here
      refetchOnWindowFocus: false,
      staleTime: 5000,
      cacheTime: 1000 * 60 * 60 * 24,
      // Other global configurations...
    },
  },
});

// Wrap your application components with QueryClientProvider
function App() {
  return (
    <QueryClientProvider client={queryClient}>
      {/* Other parts of your application */}
    </QueryClientProvider>
  );
}

By doing this, you set global default configuration for the entire application, which applies to all useQuery calls unless overridden in specific calls.

1. Using useQuery's default configuration:

If you want to change the default values of certain configuration options without affecting global settings or creating a new QueryClient instance, you can use the setDefaultOptions method provided by React Query's QueryClient:

jsx
// First, get the existing QueryClient instance
const queryClient = useQueryClient();

// Then set default configuration
queryClient.setDefaultOptions({
  queries: {
    refetchOnWindowFocus: false,
    staleTime: 5000,
    // More default configurations...
  },
});

Using any of the above methods, you can modify the default configuration of useQuery as needed. Remember that for each specific useQuery call, the configuration passed directly has the highest priority.