IndexManyAsync 和 BulkAsync 有什么区别？

如何解决IndexManyAsync 和 BulkAsync 有什么区别？

我有这两种方法可以索引产品。 nesT 中的 IndexManyAsync 和 BulkAsync 这两个选项有什么区别？

    public async Task savemanyAsync(Product[] products)
    {
        var result = await _elasticclient.IndexManyAsync(products);         
    }

    public async Task SaveBulkAsync(Product[] products)
    {
        var result = await _elasticclient.BulkAsync(b => b.Index("products").IndexMany(products));         
    }

解决方法

IndexManyAsync 只是 NEST 客户端中的一种方便的方法，它将在内部使用 Bulk。

来自docs：

这些方法特定于 NEST 客户端，以提供使用 _bulk 端点索引多个文档的便捷快捷方式。

如有疑问，您可以查看source code：

        /// <summary>
        /// Shortcut into the Bulk call that indexes the specified objects
        /// <para> </para>
        /// https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html
        /// </summary>
        /// <param name="client"></param>
        /// <typeparam name="T">The type used to infer the default index and typename</typeparam>
        /// <param name="objects">List of objects to index,Id will be inferred (Id property or IdProperty attribute on type)</param>
        /// <param name="index">Override the inferred indexname for T</param>
        /// <param name="type">Override the inferred typename for T</param>
        public static Task<BulkResponse> IndexManyAsync<T>(this IElasticClient client,IEnumerable<T> objects,IndexName index = null,CancellationToken cancellationToken = default
        )
            where T : class
        {
            var bulkRequest = CreateIndexBulkRequest(objects,index);
            return client.BulkAsync(bulkRequest,cancellationToken);
        }

        private static BulkRequest CreateIndexBulkRequest<T>(IEnumerable<T> objects,IndexName index) where T : class
        {
            var bulkRequest = new BulkRequest(index);
            var indexOps = @objects
                .NotEmpty(nameof(objects))
                .Select(o => new BulkIndexOperation<T>(o))
                .Cast<IBulkOperation>()
                .ToList();
            bulkRequest.Operations = new BulkOperationsCollection<IBulkOperation>(indexOps);
            return bulkRequest;
        }