Linux tutorial - IT technology blog
Posted inLinux

Customizing Kernel Parameters with sysctl on Linux: Optimizing Server Performance and Security

Adjusting kernel parameters with sysctl is a powerful technique to optimize Linux server performance and enhance security. From a late-night troubleshooting experience, I realized that understanding kernel behavior and knowing how to fine-tune it can save a system in the most critical situations. This is an indispensable skill for any IT engineer managing Linux production systems.
Artificial Intelligence tutorial - IT technology blog
Posted inAI

Securing AI Service API Keys (OpenAI, Claude, Gemini): A 2 AM Production Lesson

AI service API keys are critical assets requiring strict protection. This guide provides detailed instructions on securing API keys for OpenAI, Claude, and Gemini based on real-world experience, preventing leaks that cause financial damage and service disruption. It covers solutions from environment variables to cloud secret management and service-to-service authentication.