Improving Cache Hit Rate with CDN: A Compromise Solution

Web Technologies
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Improving Cache Hit Rate with CDN: A Compromise Solution

When it comes to Content Delivery Networks (CDNs), the goal is to improve the cache hit rate to reduce the load on servers and enhance user experience. However, caching HTML files can have unintended consequences, such as delayed comments and decreased user interaction. In this article, we’ll explore a compromise solution that balances cache hit rate and user experience.

Why Caching HTML Files Can Be Problematic

Caching HTML files can be beneficial for static websites, but it’s not ideal for dynamic blog platforms like WordPress or Typecho. These platforms rely on dynamic data, such as comments and views, which are not cached by CDNs. When a CDN caches an HTML file, it can’t display real-time comments, which can be detrimental to interactive blogs.

A Compromise Solution: Caching Pseudo-Static Files

To improve cache hit rate without compromising user experience, we recommend caching only pseudo-static files like JavaScript (JS) and CSS files. This approach ensures that users can access static resources quickly, while dynamic data remains unaffected.

Using Windows Hosts File to Force CDN Caching

To implement this compromise solution, we’ll use the Windows hosts file to force our computer to visit our blog site using a specific IP address. This will bypass CDN caching and allow us to cache pseudo-static files safely.

Step-by-Step Implementation

  1. Run the Dism++ artifact and select “Edit hosts” under “Tools.”

  2. Open the Windows hosts file and add the IP address and domain name of your blog site, separated by a space, as follows:

    123.123.123.123 www.mydomain.com

    Note: Ensure there’s at least one space between the IP address and domain name.

  3. Save the changes and restart your computer.

How It Works

When you visit your blog site, your computer will use the specified IP address to access the site directly, bypassing CDN caching. This means that you can cache pseudo-static files without affecting dynamic data or user experience.

Benefits

By implementing this compromise solution, you can:

  • Improve cache hit rate to reduce server load and enhance user experience
  • Safely cache pseudo-static files like JS and CSS without compromising dynamic data
  • Adjust cache settings to 10-15 minutes to balance cache hit rate and user experience

Conclusion

Improving cache hit rate with CDN is crucial for reducing server load and enhancing user experience. However, caching HTML files can have unintended consequences. By caching pseudo-static files and using the Windows hosts file to force CDN caching, you can balance cache hit rate and user experience. This compromise solution is suitable for blog owners who want to improve cache hit rate without compromising user interaction.