Firestore를 사용하여 Batch에 500개 이상의 데이터 쓰기

500개 이상 적으세요.

const followerList = follower.docs;

  const batchArray: FirebaseFirestore.WriteBatch[] = [];
  batchArray.push(db.batch()!);
  let operationCounter = 0;
  let batchIndex = 0;

  followerList.forEach(async (doc: FirebaseFirestore.DocumentSnapshot) => {
    const timelineDoc = db
      .collection("timeline")
      .doc(doc.id);
    batchArray[batchIndex].set(timelineDoc, copyedData);
    operationCounter++;

    if (operationCounter === 499) {
      batchArray.push(db.batch());
      batchIndex++;
      operationCounter = 0;
    }
  });

  batchArray.forEach(async batch => await batch.commit());