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Teki's Blog

Hello from Teki! I will talk about coding, hiking, reading and my life in Japan here.
If you want to know more about me, feel free to click on the "About Me" section. And if you're interested, please check out my blogs! Thank you for visiting.

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New Blog Posts

Coding

This is the second part of a two-part series on observability. In Part 1, we covered the theory and concepts behind the three pillars of observability - metrics, traces, and logs. In this post, we will put that theory into practice by implementing an observability architecture for a sample Spring Boot application using OpenTelemetry. Github repo - https://github.com/Teki28/observability-springboot.

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Coding

Claude Code - Comprehensive Learning Notes

by Teki • 3/30/2026

A learning note summarizing everything I know about Claude Code, the most powerful agent framework built by Anthropic. It covers the architecture, key features, and best practices for using it effectively. Most of the content is based on official documentation and my own experience building with it.

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