.net core2.1 配置

services.AddControllersWithViews().AddNewtonsoftJson();

Install-Package Microsoft.AspNetCore.Mvc.NewtonsoftJson -Version 3.1.3

ASPNETCORE_ENVIRONMENT

Development（开发）
Staging（预演）
Production（生产）

var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
.AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
.AddEnvironmentVariables();

• IsDevelopment()
• IsStaging()
• IsProduction()
• IsEnvironment()

Configuration = builder.Build();

var defaultTest = Configuration["Logging:LogLevel:Default"];

var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
var isDevelopment = environment == EnvironmentName.Development;

https://docs.microsoft.com/zh-tw/aspnet/core/fundamentals/environments?view=aspnetcore-2.1

 https://andrewlock.net/why-isnt-my-asp-net-core-environment-specific-configuration-loading/

https://dotnetcoretutorials.com/2017/05/03/environments-asp-net-core/

 https://stackoverflow.com/questions/46444981/setting-environment-variables-in-net-core-2-0

https://pascalnaber.wordpress.com/2017/11/29/handling-settings-and-environment-variables-of-your-net-core-2-application-hosted-in-a-docker-container-during-development-and-on-kubernetes-helm-to-the-resque/

export ASPNETCORE_ENVIRONMENT=development

http://www.cnblogs.com/xishuai/p/asp-net-core-set-hosting-environment-with-publish.html

https://blog.csdn.net/sD7O95O/article/details/78096359

https://stackexchange.github.io/StackExchange.Redis/Timeouts.html

How to configure this setting:

• In ASP.NET, use the “minIoThreads” configuration setting under the <processModel> configuration element in machine.config. According to Microsoft, you can’t change this value per site by editing your web.config (even when you could do it in the past), so the value that you choose here is the value that all your .NET sites will use. Please note that you don’t need to add every property if you put autoConfig in false, just putting autoConfig=”false” and overriding the value is enough:

<processModel autoConfig="false" minIoThreads="250" />

Important Note: the value specified in this configuration element is a per-core setting. For example, if you have a 4 core machine and want your minIOThreads setting to be 200 at runtime, you would use <processModel minIoThreads="50"/>.

• Outside of ASP.NET, use the ThreadPool.SetMinThreads(…) API.

• In .Net Core, add Environment Variable COMPlus_ThreadPool_ForceMinWorkerThreads to overwrite default MinThreads setting, according to Environment/Registry Configuration Knobs - You can also use the same ThreadPool.SetMinThreads() Method as described above.

export ASPNETCORE_ENVIRONMENT=development

 [ServiceFilter(typeof(ValidateReCaptchaAttribute))]

 services.AddScoped<ValidateReCaptchaAttribute>();

Request.Cookies[".AspNetCore.Session"]

HttpContext.Session.Id