Question

我使用Glimpse跟踪我页面上的sql统计信息。

最近我开始在我的几个动作中使用outputcache。然而，一瞥显示使用outputcache的页面上的数据库查询数量增加到7，而通常没有outputcache的数量是2个查询。

这是我的一个行动：

    [OutputCache(Duration = 3600)]
    public virtual async Task<ActionResult> Index(string searchString, int? page)

以下是查询：

SELECT 
    [GroupBy1].[A1] AS [C1]
    FROM ( SELECT 
        COUNT(1) AS [A1]
        FROM [dbo].[__MigrationHistory] AS [Extent1]
        WHERE [Extent1].[ContextKey] = 'MEF.DataLayer.Migrations.Configuration' /* @p__linq__0 */
    )  AS [GroupBy1]

SELECT TOP (1) 
    [c].[CreatedOn] AS [CreatedOn]
    FROM [dbo].[__MigrationHistory] AS [c]

SELECT 
    [Extent1].[MigrationId] AS [MigrationId]
    FROM [dbo].[__MigrationHistory] AS [Extent1]
    WHERE [Extent1].[ContextKey] = 'MEF.DataLayer.Migrations.Configuration' /* @p__linq__0 */

SELECT TOP (1) 
    [Project1].[C1] AS [C1], 
    [Project1].[MigrationId] AS [MigrationId], 
    [Project1].[Model] AS [Model], 
    [Project1].[ProductVersion] AS [ProductVersion]
    FROM ( SELECT 
        [Extent1].[MigrationId] AS [MigrationId], 
        [Extent1].[Model] AS [Model], 
        [Extent1].[ProductVersion] AS [ProductVersion], 
        1 AS [C1]
        FROM [dbo].[__MigrationHistory] AS [Extent1]
        WHERE [Extent1].[ContextKey] = 'MEF.DataLayer.Migrations.Configuration' /* @p__linq__0 */
    )  AS [Project1]
    ORDER BY [Project1].[MigrationId] DESC

SELECT TOP (1) 
    [Project1].[C1] AS [C1], 
    [Project1].[MigrationId] AS [MigrationId], 
    [Project1].[Model] AS [Model], 
    [Project1].[ProductVersion] AS [ProductVersion]
    FROM ( SELECT 
        [Extent1].[MigrationId] AS [MigrationId], 
        [Extent1].[Model] AS [Model], 
        [Extent1].[ProductVersion] AS [ProductVersion], 
        1 AS [C1]
        FROM [dbo].[__MigrationHistory] AS [Extent1]
        WHERE [Extent1].[ContextKey] = 'MEF.DataLayer.Migrations.Configuration' /* @p__linq__0 */
    )  AS [Project1]
    ORDER BY [Project1].[MigrationId] DESC

SELECT 
    [GroupBy1].[A1] AS [C1]
    FROM ( SELECT 
        COUNT(1) AS [A1]
        FROM [dbo].[Animes] AS [Extent1]
    )  AS [GroupBy1]

SELECT 
    [Extent1].[Id] AS [Id], 
    [Extent1].[EnglishName] AS [EnglishName], 
    [Extent1].[PersianName] AS [PersianName]
    FROM [dbo].[Animes] AS [Extent1]
    ORDER BY [Extent1].[EnglishName] ASC
    OFFSET 0 ROWS FETCH NEXT 20 ROWS ONLY

我错过了什么吗？为什么使用outputcache？

增加数据库查询的数量

使用outputcache增加数据库连接

0 个答案: