dbcontext 上下文池，提高性能测试

IRC.Core.SCP/HostConfig/AutofacModuleSetup.cs

@@ -45,8 +45,8 @@ namespace IRaCIS.Core.SCP
                 .PropertiesAutowired().AsImplementedInterfaces();
 
 
-            containerBuilder.RegisterType<HttpContextAccessor>().As<IHttpContextAccessor>().SingleInstance();
+            //containerBuilder.RegisterType<HttpContextAccessor>().As<IHttpContextAccessor>().SingleInstance();
-            containerBuilder.RegisterType<UserInfo>().As<IUserInfo>().InstancePerLifetimeScope();
+            //containerBuilder.RegisterType<UserInfo>().As<IUserInfo>().InstancePerLifetimeScope();
 
 
 

IRC.Core.SCP/HostConfig/EFSetup.cs

@@ -1,4 +1,6 @@
-using IRaCIS.Core.Infra.EFCore;
+using EntityFramework.Exceptions.SqlServer;
+using IRaCIS.Core.Domain.Share;
+using IRaCIS.Core.Infra.EFCore;
 using Medallion.Threading;
 using Medallion.Threading.SqlServer;
 using Microsoft.EntityFrameworkCore;
@@ -11,15 +13,25 @@ namespace IRaCIS.Core.SCP
     {
         public static void AddEFSetup( this IServiceCollection services, IConfiguration configuration)
         {
-            //services.AddScoped<DbContext, IRaCISDBContext>();
+            services.AddHttpContextAccessor();
+            services.AddScoped<IUserInfo, UserInfo>();
 
+            
             //这个注入没有成功--注入是没问题的，构造函数也只是支持参数就好，错在注入的地方不能写DbContext
             //Web程序中通过重用池中DbContext实例可提高高并发场景下的吞吐量， 这在概念上类似于ADO.NET Provider原生的连接池操作方式，具有节省DbContext实例化成本的优点
-            services.AddDbContext<IRaCISDBContext>(options =>
+            services.AddPooledDbContextFactory<IRaCISDBContext>(options =>
             {
-                options.UseSqlServer(configuration.GetSection("ConnectionStrings:RemoteNew").Value, 
+                // 在控制台
+                //public static readonly ILoggerFactory MyLoggerFactory    = LoggerFactory.Create(builder => { builder.AddConsole(); });
+                var logFactory = LoggerFactory.Create(builder => { builder.AddDebug(); });
+
+                options.UseSqlServer(configuration.GetSection("ConnectionStrings:RemoteNew").Value,
                     contextOptionsBuilder => contextOptionsBuilder.EnableRetryOnFailure());
 
+                options.UseLoggerFactory(logFactory);
+
+                options.UseExceptionProcessor();
+
                 options.EnableSensitiveDataLogging();
 
                 options.AddInterceptors(new QueryWithNoLockDbCommandInterceptor());
@@ -30,6 +42,12 @@ namespace IRaCIS.Core.SCP
 
             });
 
+            // Register an additional context factory as a Scoped service, which gets a pooled context from the Singleton factory we registered above,
+            services.AddScoped<IRaCISDBScopedFactory>();
+
+            // Finally, arrange for a context to get injected from our Scoped factory:
+            services.AddScoped(sp => sp.GetRequiredService<IRaCISDBScopedFactory>().CreateDbContext());
+
             //注意区分 easy caching 也有  IDistributedLockProvider
             services.AddSingleton<IDistributedLockProvider>(sp =>
             {
@@ -38,7 +56,6 @@ namespace IRaCIS.Core.SCP
                 return new SqlDistributedSynchronizationProvider(configuration.GetSection("ConnectionStrings:RemoteNew").Value);
             });
 
-            //services.AddAssemblyTriggers(typeof(SubjectVisitImageDateTrigger).Assembly);
         }
     }
 }

IRaCIS.Core.API/_ServiceExtensions/AutofacModuleSetup.cs

@@ -55,8 +55,8 @@ namespace IRaCIS.Core.API
 
 
 
-            containerBuilder.RegisterType<HttpContextAccessor>().As<IHttpContextAccessor>().SingleInstance();
+            //containerBuilder.RegisterType<HttpContextAccessor>().As<IHttpContextAccessor>().SingleInstance();
-            containerBuilder.RegisterType<UserInfo>().As<IUserInfo>().InstancePerLifetimeScope();
+            //containerBuilder.RegisterType<UserInfo>().As<IUserInfo>().InstancePerLifetimeScope();
 
 
            //注册hangfire任务  依赖注入

IRaCIS.Core.API/_ServiceExtensions/EFSetup.cs

@@ -1,11 +1,15 @@
-using Hangfire.SqlServer;
+using Castle.Core.Logging;
+using EntityFramework.Exceptions.SqlServer;
+using Hangfire.SqlServer;
 using IRaCIS.Core.Application.Triggers;
+using IRaCIS.Core.Domain.Share;
 using IRaCIS.Core.Infra.EFCore;
 using Medallion.Threading;
 using Medallion.Threading.SqlServer;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using StackExchange.Redis;
 
 namespace IRaCIS.Core.API
@@ -14,15 +18,28 @@ namespace IRaCIS.Core.API
     {
         public static void AddEFSetup( this IServiceCollection services, IConfiguration configuration)
         {
-            //services.AddScoped<DbContext, IRaCISDBContext>();
+
+            services.AddHttpContextAccessor();
+            services.AddScoped<IUserInfo, UserInfo>();
+
+            // First, register a pooling context factory as a Singleton service, as usual:
 
             //这个注入没有成功--注入是没问题的，构造函数也只是支持参数就好，错在注入的地方不能写DbContext
             //Web程序中通过重用池中DbContext实例可提高高并发场景下的吞吐量， 这在概念上类似于ADO.NET Provider原生的连接池操作方式，具有节省DbContext实例化成本的优点
-            services.AddDbContext<IRaCISDBContext>(options =>
+            services.AddPooledDbContextFactory<IRaCISDBContext>(options =>
             {
+
+                // 在控制台
+                //public static readonly ILoggerFactory MyLoggerFactory    = LoggerFactory.Create(builder => { builder.AddConsole(); });
+                var logFactory =   LoggerFactory.Create(builder => { builder.AddDebug(); });
+
                 options.UseSqlServer(configuration.GetSection("ConnectionStrings:RemoteNew").Value, 
                     contextOptionsBuilder => contextOptionsBuilder.EnableRetryOnFailure());
 
+                options.UseLoggerFactory(logFactory);
+
+                options.UseExceptionProcessor();
+
                 options.EnableSensitiveDataLogging();
 
                 options.AddInterceptors(new QueryWithNoLockDbCommandInterceptor());
@@ -62,6 +79,12 @@ namespace IRaCIS.Core.API
 
             });
 
+            // Register an additional context factory as a Scoped service, which gets a pooled context from the Singleton factory we registered above,
+            services.AddScoped<IRaCISDBScopedFactory>();
+
+            // Finally, arrange for a context to get injected from our Scoped factory:
+            services.AddScoped(sp => sp.GetRequiredService<IRaCISDBScopedFactory>().CreateDbContext());
+
             //注意区分 easy caching 也有  IDistributedLockProvider
             services.AddSingleton<IDistributedLockProvider>(sp =>
             {

IRaCIS.Core.Infra.EFCore/Context/IRaCISDBContext.cs

@@ -24,33 +24,38 @@ using IRaCIS.Core.Infrastructure;
 
 namespace IRaCIS.Core.Infra.EFCore
 {
+
+    public class IRaCISDBScopedFactory : IDbContextFactory<IRaCISDBContext>
+    {
+
+        private readonly IDbContextFactory<IRaCISDBContext> _pooledFactory;
+        private readonly IUserInfo _userInfo;
+
+        public IRaCISDBScopedFactory(IDbContextFactory<IRaCISDBContext> pooledFactory,IUserInfo userInfo)
+        {
+            _pooledFactory = pooledFactory;
+            _userInfo = userInfo;
+        }
+
+        public IRaCISDBContext CreateDbContext()
+        {
+            var context = _pooledFactory.CreateDbContext();
+            context._userInfo = _userInfo;
+            return context;
+        }
+    }
+
     public class IRaCISDBContext : DbContext
     {
-        public readonly IUserInfo _userInfo;
+        public  IUserInfo _userInfo;
 
         public readonly ILogger<IRaCISDBContext> _logger;
-        // 在控制台
-        //public static readonly ILoggerFactory MyLoggerFactory    = LoggerFactory.Create(builder => { builder.AddConsole(); });
-        // 调试窗口
-        public static readonly ILoggerFactory MyLoggerFactory = LoggerFactory.Create(builder => { builder.AddDebug(); });
 
-        public IRaCISDBContext(DbContextOptions<IRaCISDBContext> options, IUserInfo userInfo, ILogger<IRaCISDBContext> logger
+        public IRaCISDBContext(DbContextOptions<IRaCISDBContext> options,  ILogger<IRaCISDBContext> logger
 
             ) : base(options)
         {
             _logger= logger;
-            _userInfo = userInfo;
-
-        }
-
-
-        //比数据库上下文构造函数先执行 不能构造函数注入的方式使用配置文件
-        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
-        {
-            optionsBuilder.UseLoggerFactory(MyLoggerFactory);
-
-            optionsBuilder.UseExceptionProcessor();
-
         }