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rendify

v1.0.1

Published

为解决*SPA*的*SEO*问题而实现的预渲染器。

Downloads

1

Readme

rendify

为解决SPASEO问题而实现的预渲染器。

原因

目前流行的SPA应用存在SEO不好的问题,虽然提供了一些SSRSSG方案,但都存在一些弊端,想要做到稳定高可用绝非易事。

将组件渲染逻辑从客户端改到服务器执行,计算资源的成本必须考虑在内

Most importantly, SSR React apps cost a lot more in terms of resources since you need to keep a Node server up and running.

与客户端程序相比,服务端程序对稳定性和性能的要求严苛得多,因此这里考虑在客户端将SPA的地址结果预先渲染为静态结果文件。然后在接收到访问请求的时候通过UA判定请求是否来自爬虫,选择访问真实的SPA内容还是rendify生成的静态结果(例如使用nginx来做)。

prender-gen的使用方式

比如你正在编写一个SPA应用,然后希望生成当前react的静态页面,易于SEO,可以使用prender-gen。

rendify-gen [options]

Options:
  -d, --dir [dirname]  读取指定文件夹中的rendify.json中的路由配置,默认是执行rendify-gen命令所在的路径
  1. 打开自己的项目目录。

  2. 本地启动项目服务。

比如你的项目gameApp是使用create-react-app创建的,一般可以在目录gameApp下执行npm start开启http://localhost:3000服务。

  1. 新建一个配置文件,内容是静态结果文件存放路径和地址的映射。

例如可以在项目gameApp根目录下创建一个rendify.json文件,填入如下内容。

{
    "./build/shtml/home.html": "http://localhost:3000/home",
    "./build/shtml/playground.html":"http://localhost:3000/playground",
    "./build/shtml/setting/role.html":"http://localhost:3000/setting/role",
    "./build/shtml/setting/music.html":"http://localhost:3000/setting/music"
}
  1. 在当前路径创建另一个终端,运行npx rendify-gen命令。

./build/shtml/home.html等文件就会被创建,里面的内容是浏览器访问http://localhost:3000/home后的静态结果

这些静态结果文件后续可以放入服务器,比如使用nginx配置,当访问来源于搜索引擎的爬虫,则提供这些静态结果文件。当不是搜索引擎的爬虫的时候访问的时候,提供正常的SPA主文件(一般是index.html)。

这里提供一个nginx配置的例子:

server {
    location / {
        index            index.html;
        try_files        $uri @rendify;
    }

    location @rendify {
        set              $rendify 0;
        if ($http_user_agent ~* "googlebot|bingbot|yandex|baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|vkShare|W3C_Validator") {
            set          $rendify 1;
        }
        if ($args ~ "_escaped_fragment_") {
            set          $rendify 1;
        }
        if ($http_user_agent ~ "rendify") {
            set          $rendify 0;
        }
        if ($uri ~* "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff|svg|eot)") {
            set          $rendify 0;
        }
        resolver         8.8.8.8;
        if ($rendify = 1) {
            proxy_pass   http://render_server/render/$scheme://$host:$server_port$request_uri;
        }
        if ($rendify = 0) {
            rewrite      .* /index.html break;
        }
    }
}

rendify-render使用方式

rendify-render会启动一个koa服务,默认端口为8900,可以爬取到其他页面的静态内容并展示。例如http://localhost:8900/https://www.book.family.ink/webgl/basic

GET http://localhost:8900/https://www.book.family.ink/webgl/basic