How to separate initial data load from incremental children with Firebase?

Question

I have an application where new children get added to Firebase every 5 seconds or so. I have thousands of children.

On application load, I\'d like to process the ini

Answer 1

Added a createdAt timestamp in the database and limited the child_added with the current time and it seems working fine to me.

const onChildAdded = database()
  .ref(refURL)
  .limitToLast(constValues.LAST_MESSAGE_ADDED)
  .orderByChild('createdAt')
  .startAt(date.getTime())
  .on('child_added', (snapshot) => {
    parseMessage(snapshot);
  });

database()
  .ref(refURL)
  .limitToLast(constValues.LAST_MESSAGES_LIMIT)
  .once('value', (snapshot) => {
    parseInitialMessages(snapshot);
    setLoading(false);
  });