How to use NGINX and PM2 to optimize the network performance of your VPS server

How to use NGINX and PM2 to optimize the network performance of your VPS server

Introduction:
When running a website or application, the network performance of the server is crucial of. In order to improve the network performance of the server, we can use two powerful tools, NGINX and PM2, for optimization. This article will introduce how to use NGINX and PM2 to optimize the network performance of the VPS server and provide some specific code examples.

1. Install and configure NGINX

1. Install NGINX
   Use the following command to install NGINX on the VPS server:

   sudo apt update
   sudo apt install nginx

2. Configuring NGINX
   After the installation is complete, we need to configure NGINX to improve the network performance of the server. Open NGINX's default configuration file:

   sudo nano /etc/nginx/nginx.conf

   Make the following changes in the configuration file:

3. Add the worker_processes setting to specify the number of processes used by NGINX, generally set to CPU cores Twice the number:

   worker_processes auto;

4. Increase the worker_connections setting to specify the number of concurrent connections per worker process to support more concurrent requests:

   events {
    worker_connections 2048;
   }

5. Increase the keepalive_timeout setting to specify how long to wait for the next request on a persistent connection:

   http {
    keepalive_timeout 65;
   }

   After completing the changes, save and exit the configuration file. Reload NGINX for the changes to take effect:

   sudo systemctl reload nginx

2. Use NGINX for load balancing

1. Install and configure PM2
   Use the following commands Install PM2 on the VPS server:

   sudo npm install pm2 -g

2. Start the application
   First, use the following command to launch your application in PM2:

   pm2 start app.js

   Where, app .js is the entry point file for your application. You can modify it according to your actual situation.

3. Configure NGINX reverse proxy
   Open the default configuration file of NGINX:

   sudo nano /etc/nginx/nginx.conf

   Under the http block, add the following configuration to configure the reverse proxy and load balancing :

   http {
    ...
    upstream backend {
        server 127.0.0.1:3000;
        server 127.0.0.1:3001;
    }
    
    server {
        listen 80;
        server_name your_domain.com;
        
        location / {
            proxy_pass http://backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }
    ...
   }

   In the above configuration, we assume that the application is running on the local 3000 and 3001 ports. You can modify it according to the actual situation.
   After completing the changes, save and exit the configuration file. Reload NGINX for the changes to take effect:

   sudo systemctl reload nginx

Summary:
By installing and configuring NGINX for optimization, we improved the network performance of our server. Using NGINX for load balancing, we can distribute requests to multiple application instances, thereby improving the server's concurrent processing capabilities. In various applications and scenarios, these optimizations can help us improve the network performance of the server and provide a better user experience.

The above are the specific methods and code examples on how to use NGINX and PM2 to optimize the network performance of the VPS server. Hope this helps!

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