Nginx enables HTTP/2 configuration to speed up website access

Nginx enables HTTP/2 configuration to accelerate website access

With the rapid development of the Internet, website access speed is becoming more and more important to user experience. In order to improve website performance and speed up access, many websites adopt the HTTP/2 protocol. As a high-performance web server, Nginx also supports the HTTP/2 protocol and is very convenient to configure. This article will introduce how to use Nginx to enable HTTP/2 configuration to speed up website access.

1. System preparation
First, make sure you have installed Nginx and the version number is 1.9.5 or above. If your Nginx version is lower, you need to upgrade to the latest version. In addition, you also need a domain name and configure it to point to your server IP.

2. Generate SSL certificate
HTTP/2 protocol requires the use of encrypted connections, so we need to generate an SSL certificate for the website. Here is an example of using Let's Encrypt free SSL certificate:

1. Install certbot tool

   $ wget https://dl.eff.org/certbot-auto
   $ chmod +x certbot-auto

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2. Generate certificate

   $ ./certbot-auto certonly --webroot -w /var/www/html -d yourdomain.com

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   here You need to replace yourdomain.com with your domain name.

3. After the certificate is successfully generated, you can find the certificate file in the /etc/letsencrypt/live/yourdomain.com/ directory.

3. Configure Nginx to enable HTTP/2

1. Open the Nginx configuration file

   $ nano /etc/nginx/nginx.conf

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2. Find the following code, Modify the listen and ssl_certificate configuration items according to the actual situation, and add the ssl_protocols and ssl_ciphers configuration items:

   server {
       listen 443 ssl http2;
       server_name yourdomain.com;
       root /path/to/your/website;
       index index.html;
   
       ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
       ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;
   
       ssl_protocols TLSv1.2;
       ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES25';
   
       location / {
           try_files $uri $uri/ =404;
       }
   }

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   Here you need to replace yourdomain.com with your domain name and /path/to/your/website with the actual path of your website.

3. Save and exit the configuration file.

4. Restart Nginx
After completing the above configuration, restart Nginx to make it take effect:

$ systemctl restart nginx

5. Test HTTP/2
In order to ensure that HTTP/2 has been successful Enabled, it can be tested by accessing the HTTPS URL.

Enter https://yourdomain.com in the browser, right-click on the opened web page and select "Inspect" (or press F12 to open the console), select the "Network" option card, then refresh the page. It should read h2 in the Protocol column, indicating that the page is loading via the HTTP/2 protocol.

6. Summary
Through the above simple steps, we successfully configured Nginx to enable HTTP/2, which accelerated the access speed of the website. The HTTP/2 protocol effectively improves the loading speed of web pages and provides a better user experience through mechanisms such as multiplexing technology and header compression. If your website has not yet enabled HTTP/2, you may wish to try the above configuration methods to provide users with a faster access experience.

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