Full-Stack developer building scalable systems, MCP servers, and AI tooling. Notes, projects, and writing from Vietnam.https://dongquoctien.github.io/https://dongquoctien.github.io/blog/figma-jira-chrome-extension-mv3/https://dongquoctien.github.io/blog/figma-jira-chrome-extension-mv3/QA Annotator picks DOM elements, resolves the nearest Figma frame, and files Jira issues — all from a Chrome extension. The interesting parts are the ones MV3 fights you on.Tue, 12 May 2026 00:00:00 GMTchrome-extensionmanifest-v3figmajirahttps://dongquoctien.github.io/blog/what-i-got-wrong-in-my-first-mcp-servers/https://dongquoctien.github.io/blog/what-i-got-wrong-in-my-first-mcp-servers/Six MCP servers later, I look back at the design mistakes I made early on — REST-mirroring, bad tool descriptions, context bombs — and what I do differently now.Tue, 12 May 2026 00:00:00 GMTmcpairetrospectivehttps://dongquoctien.github.io/blog/why-i-stopped-fighting-mybatis/https://dongquoctien.github.io/blog/why-i-stopped-fighting-mybatis/Notes from a year on a hotel system running Spring Boot + MyBatis + Elasticsearch. The XML mapper aesthetic is unfashionable; the trade-offs are real.Tue, 12 May 2026 00:00:00 GMTjavaspring-bootmybatiselasticsearchhttps://dongquoctien.github.io/blog/hello-new-site/https://dongquoctien.github.io/blog/hello-new-site/I retired a chat-UI demo and replaced it with a proper portfolio + blog. Here's what changed and why.Sun, 10 May 2026 00:00:00 GMTmetaastrohttps://dongquoctien.github.io/blog/why-i-build-mcp-servers/https://dongquoctien.github.io/blog/why-i-build-mcp-servers/Model Context Protocol turns LLMs from chat partners into capable agents. Here's what I've learned shipping a half-dozen of them.Sun, 10 May 2026 00:00:00 GMTmcpaitooling