В моем приложении я использую идентификатор ASP.NET. Все прекрасно работает, но, тестируя, я обнаружил, что следующая команда создает множество запросов к базе данных: SignInManager.PasswordSignInAsync:
var result = await SignInManager.PasswordSignInAsync(user.UserName, model.Password, model.RememberMe, shouldLockout: true);
Я замечаю эту проблему при тестировании приложения с использованием теста производительности. Тест показывает, что для запроса ответа на вход требуется огромное время. На следующем рисунке показан результат теста производительности для запроса на вход:
.
Затем я использую SQL Server Profiler для проверки того, что происходит, когда выполняется команда SignInManager.PasswordSignInAsync. Он показывает, что генерируется большое количество запросов к базе данных. Из SQL Server Profiler взято следующее:
exec sp_executesql N'SELECT TOP (1)
[Extent1].[Id] AS [Id],
[Extent1].[UserFullName] AS [UserFullName],
[Extent1].[UserId] AS [UserId],
[Extent1].[Online] AS [Online],
[Extent1].[LastOnlineDate] AS [LastOnlineDate],
[Extent1].[BrithDate] AS [BrithDate],
[Extent1].[Job] AS [Job],
[Extent1].[Gender] AS [Gender],
[Extent1].[CountryId] AS [CountryId],
[Extent1].[LivesIn] AS [LivesIn],
[Extent1].[RelationId] AS [RelationId],
[Extent1].[Religion] AS [Religion],
[Extent1].[FirstSchool] AS [FirstSchool],
[Extent1].[SecondSchool] AS [SecondSchool],
[Extent1].[University] AS [University],
[Extent1].[ContactInfo] AS [ContactInfo],
[Extent1].[Email] AS [Email],
[Extent1].[EmailConfirmed] AS [EmailConfirmed],
[Extent1].[PasswordHash] AS [PasswordHash],
[Extent1].[SecurityStamp] AS [SecurityStamp],
[Extent1].[PhoneNumber] AS [PhoneNumber],
[Extent1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed],
[Extent1].[TwoFactorEnabled] AS [TwoFactorEnabled],
[Extent1].[LockoutEndDateUtc] AS [LockoutEndDateUtc],
[Extent1].[LockoutEnabled] AS [LockoutEnabled],
[Extent1].[AccessFailedCount] AS [AccessFailedCount],
[Extent1].[UserName] AS [UserName]
FROM [dbo].[AspNetUsers] AS [Extent1]
WHERE ((UPPER([Extent1].[UserName])) = (UPPER(@p__linq__0))) OR ((UPPER([Extent1].[UserName]) IS NULL) AND (UPPER(@p__linq__0) IS NULL))',N'@p__linq__0 nvarchar(4000)',@p__linq__0=N'[email protected]'
exec sp_executesql N'SELECT
[Extent1].[Id] AS [Id],
[Extent1].[UserId] AS [UserId],
[Extent1].[ClaimType] AS [ClaimType],
[Extent1].[ClaimValue] AS [ClaimValue]
FROM [dbo].[AspNetUserClaims] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[Id] AS [Id],
[Extent1].[UserId] AS [UserId],
[Extent1].[ClaimType] AS [ClaimType],
[Extent1].[ClaimValue] AS [ClaimValue]
FROM [dbo].[AspNetUserClaims] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[LoginProvider] AS [LoginProvider],
[Extent1].[ProviderKey] AS [ProviderKey],
[Extent1].[UserId] AS [UserId]
FROM [dbo].[AspNetUserLogins] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[UserId] AS [UserId],
[Extent1].[RoleId] AS [RoleId]
FROM [dbo].[AspNetUserRoles] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT TOP (1)
[Extent1].[Id] AS [Id],
[Extent1].[UserFullName] AS [UserFullName],
[Extent1].[UserId] AS [UserId],
[Extent1].[Online] AS [Online],
[Extent1].[LastOnlineDate] AS [LastOnlineDate],
[Extent1].[BrithDate] AS [BrithDate],
[Extent1].[Job] AS [Job],
[Extent1].[Gender] AS [Gender],
[Extent1].[CountryId] AS [CountryId],
[Extent1].[LivesIn] AS [LivesIn],
[Extent1].[RelationId] AS [RelationId],
[Extent1].[Religion] AS [Religion],
[Extent1].[FirstSchool] AS [FirstSchool],
[Extent1].[SecondSchool] AS [SecondSchool],
[Extent1].[University] AS [University],
[Extent1].[ContactInfo] AS [ContactInfo],
[Extent1].[Email] AS [Email],
[Extent1].[EmailConfirmed] AS [EmailConfirmed],
[Extent1].[PasswordHash] AS [PasswordHash],
[Extent1].[SecurityStamp] AS [SecurityStamp],
[Extent1].[PhoneNumber] AS [PhoneNumber],
[Extent1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed],
[Extent1].[TwoFactorEnabled] AS [TwoFactorEnabled],
[Extent1].[LockoutEndDateUtc] AS [LockoutEndDateUtc],
[Extent1].[LockoutEnabled] AS [LockoutEnabled],
[Extent1].[AccessFailedCount] AS [AccessFailedCount],
[Extent1].[UserName] AS [UserName]
FROM [dbo].[AspNetUsers] AS [Extent1]
WHERE [Extent1].[Id] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[Id] AS [Id],
[Extent1].[UserId] AS [UserId],
[Extent1].[ClaimType] AS [ClaimType],
[Extent1].[ClaimValue] AS [ClaimValue]
FROM [dbo].[AspNetUserClaims] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[LoginProvider] AS [LoginProvider],
[Extent1].[ProviderKey] AS [ProviderKey],
[Extent1].[UserId] AS [UserId]
FROM [dbo].[AspNetUserLogins] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[UserId] AS [UserId],
[Extent1].[RoleId] AS [RoleId]
FROM [dbo].[AspNetUserRoles] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT TOP (1)
[Extent1].[Id] AS [Id],
[Extent1].[UserFullName] AS [UserFullName],
[Extent1].[UserId] AS [UserId],
[Extent1].[Online] AS [Online],
[Extent1].[LastOnlineDate] AS [LastOnlineDate],
[Extent1].[BrithDate] AS [BrithDate],
[Extent1].[Job] AS [Job],
[Extent1].[Gender] AS [Gender],
[Extent1].[CountryId] AS [CountryId],
[Extent1].[LivesIn] AS [LivesIn],
[Extent1].[RelationId] AS [RelationId],
[Extent1].[Religion] AS [Religion],
[Extent1].[FirstSchool] AS [FirstSchool],
[Extent1].[SecondSchool] AS [SecondSchool],
[Extent1].[University] AS [University],
[Extent1].[ContactInfo] AS [ContactInfo],
[Extent1].[Email] AS [Email],
[Extent1].[EmailConfirmed] AS [EmailConfirmed],
[Extent1].[PasswordHash] AS [PasswordHash],
[Extent1].[SecurityStamp] AS [SecurityStamp],
[Extent1].[PhoneNumber] AS [PhoneNumber],
[Extent1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed],
[Extent1].[TwoFactorEnabled] AS [TwoFactorEnabled],
[Extent1].[LockoutEndDateUtc] AS [LockoutEndDateUtc],
[Extent1].[LockoutEnabled] AS [LockoutEnabled],
[Extent1].[AccessFailedCount] AS [AccessFailedCount],
[Extent1].[UserName] AS [UserName]
FROM [dbo].[AspNetUsers] AS [Extent1]
WHERE [Extent1].[Id] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[Id] AS [Id],
[Extent1].[UserId] AS [UserId],
[Extent1].[ClaimType] AS [ClaimType],
[Extent1].[ClaimValue] AS [ClaimValue]
FROM [dbo].[AspNetUserClaims] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[LoginProvider] AS [LoginProvider],
[Extent1].[ProviderKey] AS [ProviderKey],
[Extent1].[UserId] AS [UserId]
FROM [dbo].[AspNetUserLogins] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[UserId] AS [UserId],
[Extent1].[RoleId] AS [RoleId]
FROM [dbo].[AspNetUserRoles] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT TOP (1)
[Extent1].[Id] AS [Id],
[Extent1].[UserFullName] AS [UserFullName],
[Extent1].[UserId] AS [UserId],
[Extent1].[Online] AS [Online],
[Extent1].[LastOnlineDate] AS [LastOnlineDate],
[Extent1].[BrithDate] AS [BrithDate],
[Extent1].[Job] AS [Job],
[Extent1].[Gender] AS [Gender],
[Extent1].[CountryId] AS [CountryId],
[Extent1].[LivesIn] AS [LivesIn],
[Extent1].[RelationId] AS [RelationId],
[Extent1].[Religion] AS [Religion],
[Extent1].[FirstSchool] AS [FirstSchool],
[Extent1].[SecondSchool] AS [SecondSchool],
[Extent1].[University] AS [University],
[Extent1].[ContactInfo] AS [ContactInfo],
[Extent1].[Email] AS [Email],
[Extent1].[EmailConfirmed] AS [EmailConfirmed],
[Extent1].[PasswordHash] AS [PasswordHash],
[Extent1].[SecurityStamp] AS [SecurityStamp],
[Extent1].[PhoneNumber] AS [PhoneNumber],
[Extent1].[PhoneNumberConfirmed] AS [PhoneNumberConfirmed],
[Extent1].[TwoFactorEnabled] AS [TwoFactorEnabled],
[Extent1].[LockoutEndDateUtc] AS [LockoutEndDateUtc],
[Extent1].[LockoutEnabled] AS [LockoutEnabled],
[Extent1].[AccessFailedCount] AS [AccessFailedCount],
[Extent1].[UserName] AS [UserName]
FROM [dbo].[AspNetUsers] AS [Extent1]
WHERE [Extent1].[Id] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
exec sp_executesql N'SELECT
[Extent1].[Id] AS [Id],
[Extent1].[UserId] AS [UserId],
[Extent1].[ClaimType] AS [ClaimType],
[Extent1].[ClaimValue] AS [ClaimValue]
FROM [dbo].[AspNetUserClaims] AS [Extent1]
WHERE [Extent1].[UserId] = @p__linq__0',N'@p__linq__0 int',@p__linq__0=2103
Вышеупомянутые запросы являются лишь частью результата. Те же запросы выполняются несколько раз. Это нормальный случай или есть проблема?
Если это проблема, как ее можно решить.
