About this site

This is a personal notebook for documenting my technical learning journey. In my spare time I study software development and server operations, and I like to write down what I learn and the problems I run into — partly to deepen my own understanding, and partly to make it easier to look things up later.

Why this site exists

There is often a long gap between "I understand it" and "I can explain it clearly". Rewriting a concept in my own words usually reveals where my understanding is still shaky. In that sense this website is really a by-product of learning.

Main topics

• Programming fundamentals: language features, data structures, version control
• Containers and deployment: Docker, Docker Compose, reverse proxies and automated deployment
• Network security: HTTPS, TLS and common protection concepts
• Linux operations: system configuration, permission management, troubleshooting
• Databases: indexes, transactions and the basics of query optimization

Disclaimer

This site contains personal study notes only. All content reflects my own understanding during the learning process and may contain mistakes. The site offers no commercial services and involves no transactions.