UseMutation

hook returns an array
first element contains the result of the mutation
use refetchQueries parameters in [UseMutation] hook to keep cache in sync
- drawback being that the query is always rerun with any updates

const ALL_PERSONS = gql`
  query  {
    allPersons  {
      name
      phone
      id
    }
  }
`
const PersonForm = (props) => {
  // ...
  const [ createPerson ] = useMutation(CREATE_PERSON, {
    refetchQueries: [ { query: ALL_PERSONS } ]
  })

Apollo Docs: useMutation