How to transfer data between different mongodb instance?

Here is the python code to transfer data between different mongo instance:

def transfer(source_collection, dest_collection, batch_size: int):
    offset = 0
    total = source_collection.count_documents({})
    total_inserted = 0

    while True:
        documents = source_collection.find().skip(offset).limit(batch_size)
        data = list(documents)
        if len(data) == 0:
            break
        result = dest_collection.insert_many(data)
        offset += batch_size

        count_inserted = len(result.inserted_ids)
        total_inserted += count_inserted
        print(f"[{count_inserted}] documents transferred, [{total_inserted * 100 // total}%]")

if __name__ == '__main__':
    source_client = pymongo.MongoClient("192.168.1.100", 27017, username="root", password="123456")
    source_db = source_client["shop"]
    source_collection = source_db["product"]

    dest_client = pymongo.MongoClient("192.168.1.200", 27017, username="mongo", password="123456")
    dest_db = dest_client["shop"]
    dest_collection = dest_db["product"]

    transfer(source_collection, dest_collection, batch_size=500)

    source_client.close()
    dest_client.close()