Devakinandan — Engineering notes and blogs https://devakinandan.me Notes and essays about backend engineering, applied AI, and reliable software systems. en Thu, 24 Sep 2026 00:00:00 GMT What is Jev, and when should an agent use it? https://devakinandan.me/notes/what-is-jev https://devakinandan.me/notes/what-is-jev Thu, 24 Sep 2026 00:00:00 GMT A practical mental model for Jev: a decision model that returns typed choices, scores, and probabilities instead of generated prose. agents jev inference RAG quality is a pipeline problem, not a model choice https://devakinandan.me/blogs/rag-quality-is-a-pipeline-problem https://devakinandan.me/blogs/rag-quality-is-a-pipeline-problem Mon, 21 Sep 2026 00:00:00 GMT A practical way to diagnose retrieval-augmented generation by separating ingestion, retrieval, ranking, and answer-generation failures. rag retrieval evaluation Why does RAG need reranking after retrieval? https://devakinandan.me/notes/what-is-reranking https://devakinandan.me/notes/what-is-reranking Mon, 21 Sep 2026 00:00:00 GMT A practical mental model for why retrieval candidates still need a more precise second ranking step. rag retrieval Reliable agent workflows need explicit state https://devakinandan.me/blogs/agent-workflows-need-explicit-state https://devakinandan.me/blogs/agent-workflows-need-explicit-state Fri, 18 Sep 2026 00:00:00 GMT Why production agent systems benefit from visible transitions, bounded tools, and deterministic recovery paths instead of open-ended loops. agents reliability backend