폴링

useQuery(() => ({
  queryKey: ['prices'],
  queryFn: fetchPrices,
  refetchInterval: 5_000, // every 5 seconds
}))

useQuery(() => ({
  queryKey: ['job', jobId],
  queryFn: () => fetchJobStatus(jobId),
  refetchInterval: (query) => {
    // Stop polling once the job finishes
    if (query.state.data?.status === 'complete') return false
    return 2_000
  },
}))

useQuery(() => ({
  queryKey: ['portfolio'],
  queryFn: fetchPortfolio,
  refetchInterval: 30_000,
  refetchIntervalInBackground: true,
}))

useQuery(() => ({
  queryKey: ['prices', tokenAddress],
  queryFn: () => fetchPrice(tokenAddress),
  refetchInterval: () => {
    if (!tokenAddress || isPaused) return false
    return 15_000
  },
}))

useQuery(() => ({
  queryKey: ['chainStatus'],
  queryFn: fetchChainStatus,
  refetchInterval: 10_000,
  networkMode: 'always',
}))