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Programming Languages
Language releases, performance tips, and type systems in practice.
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A six-line edit made fifteen units stale. The freshness check was working correctly.
25+ min ago (530+ words) Every unit of this project carries a record of its last verification, and each record pins the configuration it was checked against by hashing it. If the configuration changes, the pin no longer reproduces and the record goes stale, which…...
Generation and Operations Are One Thing
16+ min ago (856+ words) Add a service and you get code, observability and deploy — or the platform drifts from reality. What it takes to keep 'declared' and 'actual' the same thing by construction, and what that costs. Tagged with platform, devops, go, architecture....
Deploy Is a Consequence of the Manifest
17+ min ago (1038+ words) Three pipelines, identical for every service, derived from the file that declares the service - and exactly three decisions left to a human: environment, secrets, tag. Plus the one defect in this area that stays green while being wrong. Tagged with…...
Metrics You Get Without Writing Any
17+ min ago (1448+ words) A machine-written snapshot of one service counts 67 metric records. Six of them came from the service. The rest arrived with the runtime - and the rules for adding a new one are stricter than the rules for writing the code that…...
Where Background Removal APIs Send Your Users' Video
42+ min ago (914+ words) Picking a background removal API is an engineering decision right up until it stops being one. The masks hold on hair and glasses, the latency fits, the integration is a two day job, and then a security reviewer at your…...
Salesforce Data Cloud: When Source!= Target
30+ min ago (623+ words) The source and target environments look identical. So why does the deployment fail? This was one of the most interesting problems I encountered while working on a Salesforce Data Cloud deployment. The architecture looked correct. The components existed in both…...
Our SSRF guard passed every test we ran — until a stranger's comment pointed out the test we never ran
30+ min ago (300+ words) Then I didn't follow up. The comment sat there for weeks. Going back to it tonight, the gap was worse than I'd worried. Five of our endpoints (redirect-trace, security-scan, security-headers, favicon, scrape) fetch a user-supplied URL. All five guarded against…...
Overcoming the Performance Tax in AI Safety: Engineering a Low-Latency Control Plane for Autonomous Agents
38+ min ago (668+ words) As enterprise AI systems move from single-turn retrieval-augmented generation (RAG) toward agents that plan, call tools, and modify external state, safety can no longer be treated only as text filtering. The goal is not to promise "zero overhead." The goal…...
Learning to Build with LLMs the Framework-Free Way
56+ min ago (367+ words) Hello, I'm Rijul, and I'm building LiveReview — a blast-radius aware AI code review built for your... Tagged with ai....
I published a benchmark that was entirely my own bug
1+ hour, 6+ min ago (898+ words) I built a small thing and then spent considerably longer trying to find out whether it worked. The trying-to-find-out is the part worth writing about, because for seven runs my measurement was broken in a way that produced confident, specific,…...