Blog

Technical notes, SEO strategies, and practical lessons from building products for global markets.

• 
  2/23/2024

  Fixing WebSocket Auto-Disconnect with java.io.EOFException

  Resolve WebSocket service auto-disconnect issues when using Nginx reverse proxy, with two solutions: modifying Nginx timeout configuration and adding heartbeat mechanism.

• 
  2/22/2024

  BigDecimal Comparison

  Introduce the methods for comparing size and equality of Java BigDecimal class, using compareTo for precise comparison.

• 
  2/20/2024

  Connecting to Routers via SSH in Java: Executing Commands and Reading Responses

  A complete example of using mwiede/jsch to connect to Huawei routers via SSH in Java, send commands, and read responses.

• 
  2/20/2024

  Configuring Nginx to Start Automatically on Boot

  Complete steps to configure nginx to start automatically on boot on Linux systems using systemd service configuration.

• 
  2/20/2024

  Fixing Nginx failed 13 Permission denied while connecting to upstream

  Resolve SELinux permission issues encountered when using Nginx reverse proxy, with solutions including disabling SELinux restrictions and setting httpd_can_network_connect.

• 
  1/30/2024

  Integrating WebSocket in Spring Boot

  Learn how to integrate WebSocket in Spring Boot projects, including dependency setup, configuration classes, utility classes, and server implementation, supporting client connections, message receiving, and broadcast functionality.

• 
  1/25/2024

  Git Common Commands

  Personal commonly used git commands, including proxy settings, viewing and canceling proxy operations.