memory issues in dot net 2.1 and 2.0

Question

Hi,
I'm using Asp.Net core 2.1 for a razor pages project with a polling system (interval ajax calls). I found it has 2 types of memory leaks. the first one is when a polling occurs the other is whenever a new webpage is opened. I assume it happen on every http call but I cant ensure it. different solutions on the internet advised to go back to Asp.Net core 2.0, but when I tried it, the polling calls consumed the whole cpu usage and stuck the server. if ill upgrade to asp.net version to - 3.1 will it fix my problem? is there a solution without changing asp.net version?

Answer 1

public class Program
{
    public static void Main(string[] args)
    {
        var host = BuildWebHost(args);
        host.Run();
    }

    public static IWebHost BuildWebHost(string[] args)
    {
        IConfigurationRoot config = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("hosting.json", optional: true)
            .Build();

        return WebHost.CreateDefaultBuilder(args)
            .UseConfiguration(config)
            .UseContentRoot(Directory.GetCurrentDirectory())
            .UseKestrel()
            .UseIISIntegration()
        .ConfigureLogging((hostingContext, logging) =>
        {
            logging.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
            logging.AddConsole();
            logging.AddDebug();
            logging.AddFilter("Microsoft.EntityFrameworkCore.Database.Command", LogLevel.Warning);
            logging.AddFilter("Microsoft.EntityFrameworkCore", LogLevel.Warning);
        })
            .UseStartup<Startup>()
            .Build();
    }

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        Assembly assem = Assembly.GetEntryAssembly();
        AssemblyName assemName = assem.GetName();
        Version ver = assemName.Version;
        #region Services
        services.AddScoped<IReportService, ReportService>();
        services.AddTransient<IPermissionService, PermissionService>();
        services.AddTransient<IStatusMonitoringService, StatusMonitoringService>();
        services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
        services.AddHostedService<TimedActiveDirService>();
        services.AddHostedService<PingService>();
        services.AddHostedService<TestExtenderService>();

        // Add language support
        services.AddLocalization(o =>
        {
            o.ResourcesPath = "Resources";
        });

        services.Configure<RequestLocalizationOptions>(options =>
        {
            options.DefaultRequestCulture = localizationOptions.DefaultRequestCulture;
            options.SupportedCultures = localizationOptions.SupportedCultures;
            options.SupportedUICultures = localizationOptions.SupportedUICultures;
        });

        // Add Kendo UI for Telerik Scheduler
        services.AddKendo();
        #endregion Services

        services.AddDbContext<UserContext>(options =>
            options.UseSqlite("Data Source=" + TSMModule.TSMMng.m_SQLDataBasesPath + "/user.db")); //defined in ApplicationDbContext.cs

        services.AddDbContext<AuxilaryContext>(options =>
        //LMS TODO, take the path from configuration
            options.UseSqlite("Data Source=" + TSMModule.TSMMng.m_SQLDataBasesPath + "/auxilary.db")); //defined in AuxilaryContext.cs

        // Configure Authentication
        services.AddAuthentication(options =>
        {
            options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
            options.DefaultAuthenticateScheme = CookieAuthenticationDefaults.AuthenticationScheme;
            options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme;
        }).AddCookie(options =>
        {
            options.LoginPath = "/Login";
            options.AccessDeniedPath = "/Forbidden";
        });

        services.AddSingleton<IClaimsTransformation, ClaimsTransformer>();

        services.AddMvc()
            .AddViewLocalization()
            .AddDataAnnotationsLocalization(options => options.DataAnnotationLocalizerProvider = (type, factory) => new StringLocalizer<SharedResources>(factory))
            .AddJsonOptions(options => options.SerializerSettings.ContractResolver = new DefaultContractResolver())
            .AddRazorOptions(options =>
            {
                options.PageViewLocationFormats.Add("/Pages/Shared/{0}.cshtml");
                options.PageViewLocationFormats.Add("/Pages/DashboardPartials/{0}.cshtml");
            });
    }
}