Кеширование и стратегии

useQuery({
    queryKey: ['posts'],
    queryFn: fetchPosts,
    staleTime: 5 * 60_000,    // 5 минут данные считаются свежими
    gcTime: 30 * 60_000,      // 30 минут в памяти после использования
});

staleTime: Infinity

staleTime: 0,
cacheTime: 0,

staleTime: 5 * 60_000

staleTime: 5 * 60_000,
refetchOnMount: 'always',

const persister = createAsyncStoragePersister({
    storage: AsyncStorage,
    key: 'react-query-cache',
    throttleTime: 1000,
});

<PersistQueryClientProvider
    client={queryClient}
    persistOptions={{
        persister,
        maxAge: 24 * 60 * 60 * 1000,
        dehydrateOptions: {
            shouldDehydrateQuery: (query) => query.state.status === 'success',
        },
    }}
>
    <App />
</PersistQueryClientProvider>

import { Image } from 'expo-image';

<Image
    source={{ uri: url }}
    cachePolicy="memory-disk"  // 'none' | 'disk' | 'memory' | 'memory-disk'
    transition={200}
/>

queryClient.prefetchQuery({
    queryKey: ['post', id],
    queryFn: () => fetchPost(id),
});

queryClient.invalidateQueries({ queryKey: ['posts'] });           // все с этим ключом
queryClient.invalidateQueries({ queryKey: ['posts', id] });       // конкретный
queryClient.invalidateQueries({ queryKey: ['posts'], exact: true }); // точное совпадение

queryClient.setQueryData(['post', id], newData);

onMutate: async (updated) => {
    await queryClient.cancelQueries({ queryKey: ['post', updated.id] });
    const previous = queryClient.getQueryData(['post', updated.id]);
    queryClient.setQueryData(['post', updated.id], updated);
    return { previous };
},
onError: (_, __, context) => {
    queryClient.setQueryData(['post', context?.previous?.id], context?.previous);
},
onSettled: () => {
    queryClient.invalidateQueries({ queryKey: ['post'] });
},

function logout() {
    queryClient.clear();
    AsyncStorage.clear();
    SecureStore.deleteItemAsync('token');
}