stack
Tech stack
Tier 1 — shipped
Languages
GoPythonTypeScriptC/C++JavaSQL
Systems & Protocols
TCP/IPRESP2WALRaft consensusMVCCWebSocketsHTTP/REST
Databases
PostgreSQLRedisMongoDB
Backend
Node.jsExpressFastAPI
Tools & Infra
GitGitHub ActionsDockerLinuxVercelRender
Frontend
ReactNext.jsTailwind CSS
Tier 2 — active self-study
Active self-study
RAGLangChainLangGraphVector databasesPyTorch
Tier 2 = actively learning, not yet shipped in production work.