为什么 Angular Universal 中的 res.render 需要这么长时间? [英] Why is res.render in Angular Universal taking so long?

问题描述

我正在构建一个 Angular 通用应用程序，我现在拥有的只是网站的结构.我所做的一切都与教程中有关为 Angular Universal 转换我的应用程序一样.

console.log("got Request " + new Date());res.render(join(DIST_FOLDER, 'browser', 'index.html'), { req , time: true},功能(错误，html){console.log("渲染完成" + new Date());res.send(html);});

渲染需要 3 秒半.这对我来说似乎是一个巨大的时间.同样在 Chrome TTFB 中的 DeveloperTools 是 3.5 秒.除了路由之外，该应用程序还没有做任何事情.我不希望我未来的应用程序如此缓慢.

任何人都知道这是正常现象还是有什么需要改进的地方?存在问题的 Github 存储库 https://github.com/Joniras/slow-universal-rendering-例子

设置工作区并运行 angular-universal:

npm 安装npm 运行构建:通用npm 运行服务:通用

<块引用>

版本:
Angular CLI:1.5.0
节点:6.11.5操作系统:win32 x64角度:5.0.1...动画、通用、编译器、编译器-cli、核心、表单... http、语言服务、平台浏览器... 平台浏览器动态，平台服务器，路由器@angular/cdk: 5.0.0-rc0@angular/cli: 1.5.0@angular/flex-layout: 2.0.0-beta.10-4905443@angular/material: 5.0.0-rc0@angular-devkit/build-optimizer: 0.0.33@angular-devkit/core: 0.0.20@angular-devkit/schematics: 0.0.35@ngtools/json-schema: 1.1.0@ngtools/webpack: 1.8.0@schematics/angular: 0.1.3打字稿:2.4.2webpack: 3.8.1express 4.16.2
我必须将样式设置为代码，否则我无法发布

解决方案

您的代码 (UserService) 中存在 3000 毫秒超时

setTimeout(() => {解决(this.loggedInUser)；}, 3000);

I am building a Angular Universal App and all i have now is the Structure of the site. I did everything like in the tutorial concerning transforming my app for Angular Universal.

console.log("got Request " + new Date());
res.render(join(DIST_FOLDER, 'browser', 'index.html'), { req , time: true}, 
   function(err, html) {
      console.log("finished Rendering " + new Date());
      res.send(html);
   }   
);

The Rendering takes up 3 and a half seconds.. This seems like a huge amount of time to me. Also in the DeveloperTools in Chrome TTFB is 3,5 seconds. And the app doesnt do anything yet except routing. I dont want my future app to be so slow.

Anyone has a clue if this is normal or there is something to improve ? Github repo with Problem https://github.com/Joniras/slow-universal-rendering-example

Setting up Workspace and running angular-universal:

npm install   
npm run build:universal   
npm run serve:universal     

Versions:
Angular CLI: 1.5.0
Node: 6.11.5 OS: win32 x64 Angular: 5.0.1 ... animations, common, compiler, compiler-cli, core, forms ... http, language-service, platform-browser ... platform-browser-dynamic, platform-server, router @angular/cdk: 5.0.0-rc0 @angular/cli: 1.5.0 @angular/flex-layout: 2.0.0-beta.10-4905443 @angular/material: 5.0.0-rc0 @angular-devkit/build-optimizer: 0.0.33 @angular-devkit/core: 0.0.20 @angular-devkit/schematics: 0.0.35 @ngtools/json-schema: 1.1.0 @ngtools/webpack: 1.8.0 @schematics/angular: 0.1.3 typescript: 2.4.2 webpack: 3.8.1 express 4.16.2
i had to style as code because otherwise i couldnt post

解决方案

There is a 3000 ms timeout in your code (UserService)

setTimeout(() => {
          resolve(this.loggedInUser);
        }, 3000);

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