8131. Jekyll - SEO
SEO, CDN, and DNS

Optimize the website to improve the rankings.

1. SEO

Search engine optimization (SEO) is the process of increasing the quality and quantity of website traffic by increasing the visibility of a website or a web page to users of a web search engine.

1.1 robots.txt

Avoid web crawler to visit specific content, eg. /note.

User-agent: *
Disallow: /note/

1.2 RSS Feed

Edit /blog/atom.xml

---
layout: nil
type: blog
---

<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">

  <title>{{ site.blogtitle }}</title>
  <link href="{{ site.url }}/blog/atom.xml" rel="self"/>
  <link href="{{ site.url }}/blog"/>
  <updated>{{ site.time | date_to_xmlschema }}</updated>
  <id>{{ site.url }}</id>
  <author>
    <name>{{ site.author.name }}</name>
    <email>{{ site.author.email }}</email>
  </author>

  {% for post in site.posts %}
      <entry>
        <title>{{ post.title }}</title>
        <link href="{{ site.url }}{{ post.url }}"/>
        <updated>{{ post.date | date_to_xmlschema }}</updated>
        <id>{{ site.url }}{{ post.id }}</id>
        <content type="html">{{ post.content | xml_escape }}</content>
      </entry>
  {% endfor %}

</feed>

1.3 Sitemap

---
---
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  {% for page in site.pages %}
    {% if page.layout != nil and page.layout != 'feed' and page.url != '/note/' and page.url != '/index_note/' and page.url != '/index_tutorial/' and page.url != '/search/' and page.url != '/blog/atom.xml' and page.url != '/contact/'%}
      <url>
        <loc>http://jojozhuang.github.io{{ page.url | remove: 'index.html' }}</loc>
      </url>
    {% endif %}
  {% endfor %}

  {% assign portfolios = site.portfolio %}
  {% assign blogs = site.posts %}
  {% assign posts = portfolios | concat: blogs %}
  {% for post in posts %}
    <url>
      <loc>http://jojozhuang.github.io{{ post.url | remove: 'index.html' }}</loc>
    </url>
  {% endfor %}

</urlset>

2. Caching with CDN

2.1 Create a new account in Cloudflare

Add a new site, note the two name servers

miki.ns.cloudflare.com
owen.ns.cloudflare.com

2.2 Update Name server in GoDaddy

Find your domain, click the three dot button, choose ‘Manage DNS’. Scroll down, see the Nameservers section, click ‘Change’ btton. Select ‘Custom’ type and input two Cloudflare name servers. Done. You will receive an email from CloudFlare.