.net core HttpClient 性能優化

1、使用HttpClientFactory工廠；

2、Startup里ConfigureServices添加HttpClient的具體的客戶端服務；（注冊到DI容器 ）

services.AddHttpClient("SystemService", c =>
{
c.BaseAddress = new Uri(Configuration["ApiConfig:SystemService"]);
c.Timeout = TimeSpan.FromSeconds(30);
});

3、增加默認連接數和啟用保活機制

在Program的Main方法里添加 

  //增加保活機制，表明連接為長連接
  client.DefaultRequestHeaders.Connection.Add("keep-alive");
  
  //啟用保活機制（保持活動超時設置為 2 小時，並將保持活動間隔設置為 1 秒。）
  ServicePointManager.SetTcpKeepAlive(true, 7200000, 1000);
  
   //默認連接數限制為2，增加連接數限制
  ServicePointManager.DefaultConnectionLimit = 512;

4、嘗試使用Socket通信連接

var client = new HttpClient(new SocketsHttpHandler()
{
    //考慮忽略使用代理
    UseProxy = false,
    //考慮增加連接數配置
    MaxConnectionsPerServer = 100,
    //考慮忽略重定向響應
    AllowAutoRedirect = false,
    //考慮忽略SSL證書驗證
    SslOptions = new SslClientAuthenticationOptions()
    {
        RemoteCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true
    },
    //考慮數據壓縮設置
    AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip,
  })
  {
      BaseAddress = new Uri(""),
      Timeout = TimeSpan.FromSeconds(30),
  };

 

new HttpClient(new SocketsHttpHandler()看第一句代碼。