Thoughts on data platforms, AI systems, and engineering by Yuhao Dai. https://daitechlab.com/blog/ en Sat, 15 Feb 2026 00:00:00 +0900 https://daitechlab.com/blog/posts/building-agentic-workflows.html What I learned deploying LLM agents in enterprise environments. Tool use patterns, error handling, and why simple beats clever. Sat, 15 Feb 2026 00:00:00 +0900 https://daitechlab.com/blog/posts/building-agentic-workflows.html AI https://daitechlab.com/blog/posts/data-vault-2-practical-guide.html Implementing Data Vault in the real world. When it makes sense, when it doesn't, and how to avoid common pitfalls. Wed, 15 Jan 2026 00:00:00 +0900 https://daitechlab.com/blog/posts/data-vault-2-practical-guide.html Data https://daitechlab.com/blog/posts/rag-system-architecture.html Moving past tutorial-level RAG. Chunking strategies, hybrid search, and evaluation frameworks that actually work. Mon, 15 Dec 2025 00:00:00 +0900 https://daitechlab.com/blog/posts/rag-system-architecture.html AI https://daitechlab.com/blog/posts/looker-migration-playbook.html Migrating from PowerBI to Looker for a global enterprise. LookML patterns, governance, and lessons learned. Sat, 15 Nov 2025 00:00:00 +0900 https://daitechlab.com/blog/posts/looker-migration-playbook.html Data https://daitechlab.com/blog/posts/working-in-japan-data-engineer.html 5 years of data engineering in Tokyo. The good, the challenging, and what I wish I knew earlier. Wed, 15 Oct 2025 00:00:00 +0900 https://daitechlab.com/blog/posts/working-in-japan-data-engineer.html Career