我有一個用 PHP 開發(fā)的 Web API，可以與 MySQL 進行通信。我想將數(shù)據(jù)庫更改為 Firestore，但在 MySQL 中，當我批量插入 4500 條記錄時，幾乎是立即完成的，但使用 Firestore 時，大約需要 15 分鐘。關(guān)于為什么會這樣的任何想法嗎？我試過這兩個代碼：use Google\Cloud\Firestore\DocumentReference;use Google\Cloud\Firestore\FirestoreClient;use Spatie\Async\Pool;/* @var FirestoreClient */private $database;/* @var DocumentReference */private $collectionReference;代碼1：$pool = Pool::create();$graduatesFailed = [];/** @var Graduate $graduate */foreach ($graduates as $graduate) {    $pool[] = async(function () use ($graduate) {        return $this->collectionReference->add($graduate->jsonSerialize());    })->catch(function ($e) use ($graduatesFailed, $graduate) {        array_push($graduatesFailed, $graduate->getUser());    });}await($pool);代碼2：$writeBatch = $this->database->batch();$count = 0;$graduatesFraction = array_slice($graduates, 0, 500);$graduatesFailed = [];while ($count < count($graduates)) {    /** @var Graduate $graduate */    foreach ($graduatesFraction as $graduate) {        try {            $count++;            $writeBatch->create(                $this->collectionReference->document($graduate->getUser()),                $graduate->jsonSerialize()            );        } catch (Exception $e) {            array_push($graduatesFailed, $graduate->getUser());        }    }    $writeBatch->commit();}