我正在地圖項目中實時使用 firestore，它需要以 x 距離間隔更新用戶的當前位置。但是，實時偵聽器不斷重新獲取我自己的更新，從而增加了我的閱讀量。我假設 firestore 在發送到服務器之前會實時更新本地緩存，是否可以忽略該用戶所做的更改？class Booking extends Component {  constructor(props) {   super(props);   this.state = {     isLoading: false,     errorMessage: '',   };   this.unsubscribe = null; } componentDidMount() {   this.getRealTimeData(); } componentWillUnmount() {    this.unsubscribe = null;  } getRealTimeData = () => {   this.fetchCompletedGigs(); }   fetchCompletedGigs = () => {     const { userID } = this.props;     this.props.bookingData([]);     this.setState({ isLoading: true, errorMessage: '' });     this.unsubscribe = Firebase.shared.fetchBooking('Bookings')      .where('userID', '==', userID)      .orderBy('d.CreatedAt', 'desc')      .limit(20)       .onSnapshot((querySnapshot) => {         if (querySnapshot.empty) {           this.setState({             isLoading: false,             errorMessage: "You currently don't have anybooking",           });           this.props.bookingData([]);         }         querySnapshot.docChanges().forEach(change => {           const doc = change.doc;           const item = doc.data();           item.docId = doc.id;           const list = [...this.props.bookings, item];           this.setState({ isLoading: false, errorMessage: '' });           if (change.type === 'added') {             const filterList = _.uniqBy(list, 'docId');             this.props.bookingData(filterList);           } else if (change.type === 'removed') {             const newData = list.filter(task => task.docId !== doc.id);              const filterList = _.uniqBy(newData, 'docId');             return this.props.bookingData(filterList);           } else if (change.type === 'modified') {             const newData = list.filter(task => task.docId !== doc.id);             const newList = [...newData, item];             const filterList = _.uniqBy(newList, 'docId');             return this.props.bookingData(filterList);           }         }