How to use CDN to speed up PHP website access?

How to use CDN to accelerate the access speed of PHP website?

With the development of the Internet and the increase in usage, many websites are facing the problem of slow access speeds. In order to improve users' access experience, many websites choose to use CDN (Content Delivery Network) to speed up website access. CDN is a distributed network architecture with node servers all over the world. It can cache the static resources of the website to the node server closest to the user, thereby improving the user's access speed and stability.

In this article, we will introduce how to use CDN to accelerate the access speed of PHP website and give some code examples.

1. Choose a suitable CDN supplier

First of all, we need to choose a suitable CDN supplier. There are many CDN providers on the market, such as Alibaba Cloud CDN, Tencent Cloud CDN, Fastly, etc. We need to choose the appropriate CDN provider based on the needs and budget of our website.

2. Configure CDN acceleration

1. Register CDN service: According to the requirements of the selected CDN provider, register a CDN service account and obtain the relevant API key.
2. Create an accelerated domain name: On the CDN provider's console, create an accelerated domain name and bind the website's domain name to the accelerated domain name.
3. Configure DNS resolution: resolve the domain name of the website to the accelerated domain name provided by the CDN provider.
4. Set caching rules: Set corresponding caching rules according to the static resource type of the website. For example, for a PHP website, we can set the cache time of .php files to be longer, and for static resources such as images, CSS, and JavaScript, we can set a shorter cache time.

3. Optimize PHP code

When using CDN to accelerate the access speed of PHP website, we can also optimize some PHP code to improve the performance of the website.

1. Enable caching: Use PHP's caching mechanism to cache frequently used data to avoid recalculation for each access. You can use caching tools such as Memcached or Redis.
2. Reduce database queries: Optimize database queries and minimize the number of queries. You can use caching technology to cache query results to avoid repeated queries.
3. Compressed output: In PHP code, you can use compressed output technology to reduce the size of web pages, thereby reducing network transmission time.
4. Merge and compress static resources: Combine multiple CSS and JavaScript files into one file and compress it to reduce the number of HTTP requests and file size.

4. Code Examples

The following are some PHP code examples to demonstrate how to use CDN to accelerate the loading of image resources.

1. Introduce CDN-accelerated image resources into PHP code:

<img src="/static/imghwm/default1.png"  data-src="https://cdn.example.com/images/example.jpg"  class="lazy" alt="example">

2. Set the caching rules for image resources in the CDN provider's console, such as The resource's cache time is set to 1 hour.

Through the above configuration and PHP code optimization, we can use CDN to accelerate the access speed of the PHP website and improve the user's access experience. However, it should be noted that CDN is not suitable for dynamically generated content, such as user personal information and login status, which still need to be obtained from the original server. Therefore, while using CDN acceleration, you also need to pay attention to the management and update of cached content.

Summary: Using CDN to accelerate the access speed of PHP websites is an important means to improve user access experience. By choosing a suitable CDN provider, configuring CDN acceleration, optimizing PHP code and conducting corresponding code examples, we can effectively improve the access speed and performance of PHP websites.

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