Writing — Bhupesh Roushan

Writing — Bhupesh Roushan https://www.bhupesh.blog/writing Engineering decisions written up from the commits that record them. en 470 students were told they failed a run that never happened https://www.bhupesh.blog/writing/atlas-false-failures https://www.bhupesh.blog/writing/atlas-false-failures Wed, 01 Jul 2026 09:00:00 GMT An absent record is not a failure record — and what a timed-out read actually tells you. Failure modes Fail closed Data integrity The safety net was breaking the grades https://www.bhupesh.blog/writing/atlas-constrained-decoding https://www.bhupesh.blog/writing/atlas-constrained-decoding Wed, 01 Jul 2026 09:00:00 GMT Why Atlas stopped forcing the model to emit valid JSON — and what it cost to find out. LLM evaluation Constrained decoding Failure modes The login that worked everywhere except production https://www.bhupesh.blog/writing/cloudwatch-cookie-origin https://www.bhupesh.blog/writing/cloudwatch-cookie-origin Sun, 01 Feb 2026 09:00:00 GMT Forty commits chasing a cross-subdomain auth cookie, and the reason none of them could have worked. Auth Cookies Serverless deploys The lecture videos that only played on my machine https://www.bhupesh.blog/writing/buildingblocks-mixed-content https://www.bhupesh.blog/writing/buildingblocks-mixed-content Wed, 01 Jan 2025 09:00:00 GMT Cloudinary hands back two URLs for every upload. Only one of them works on an HTTPS page. Mixed content Media pipeline Boundaries