How to rename database columns and alter schema types on 500-million row Postgres tables without holding table locks.
Phase 1: Expand, Phase 2: Dual Write & Backfill, Phase 3: Contract.
Unpacking DeepSeek-R1's Multi-head Latent Attention (MLA), DeepSeekMoE 210B sparse routing, and group relative policy optimization (GRPO) reinforcement learning.
A RAG demo answering questions correctly over ten hand-picked documents proves almost nothing about how it behaves over a real corpus. Seven concrete ways retrieval-augmented generation breaks in production, and what actually fixes each one.
Senior engineers walk into this question and either downplay a real failure into something trivial, or overshare something career-damaging. Neither answers what the interviewer is actually evaluating — and the part of the story most candidates skip is the part that matters most.
Get direct engineering insights, Cloud tutorials, career prep guidebooks, and system design breakdown analyses sent straight to your inbox.
The official developerOS team account.
Direct comments are not hosted on Insights. Connect with the author, explore more articles in this series, or join the discussion across developerOS.
