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This series is written in the open, from a real production system. This chapter is the vault: identity, isolation, authorization, and the tests that prove it holds. [All chapters and diagrams live in the public repo.] Multi-tenant means many unrelated companies share one running system and one database, each seeing only its own data. Get it right and hosting stays cheap forever. Get it wrong and Business A reads Business B's invoices — for a billing product, that's the ballgame. This chap...

Introduction Data science begins with data, and how that data is stored determines how easily it can be cleaned, explored, and analyzed. Python is a data science tool tat anyone who is interested in data science would be wise to utilize. Python's four core data structures (lists, tuples, dictionaries, and sets) form the foundation for this work. Lists hold ordered collections such as a column of measurements or a series of records. Tuples protect values that should not change, such as fi...

A personal project to make phone calls easier for an elderly, non English-speaking parent that works entirely offline, and the long road through Whisper models, sherpa-onnx, frame-size crashes, and Android's scoped storage pitfalls before it finally worked with zipformer. 12 min read · Android · AI models · Bengali · ASR · On-device AI I wanted to build a simple tool for my elderly, non-English-speaking mother: an Android voice dialer that would let her say a Bengali nickname—like "মিলি" ...

Hello everyone, I wanted to share a project I started in 2025 to solve something that kept getting on my nerves in my own homelab. Every time I deployed another container, I found myself back in the Cloudflare dashboard. Add a hostname, point it at the service, configure Access, and remember to clean things up when I stopped using it. Nothing particularly difficult. Just the same work, again and again. Everything else about the service was already in my Docker Compose file. Having it...

Every time I started a new Angular mobile app, I found myself rebuilding the same foundation: Authentication Refresh tokens Secure storage Offline handling Push notifications Biometrics Translations RTL support Dark mode API integration Eventually, I decided to turn that repeated setup into a reusable starter. That became LaunchKit Mobile , an Angular 22 + Ionic + Capacitor starter designed to provide the production plumbing before you start building the actual bu...

In Post 3, the behavioral difference tracked the memory graph, not the substrate. When I swapped one individual's learned associations into an identical brain, the subject did not just get confused. It went below chance, scoring 0.17 on the six-cue, three-action task, actively steered toward another individual's answers. In an isolated sandbox that is a curiosity. In any real system where an agent's behavior is reinstated from an external, writable memory, it is a vulnerability. The structural i...

api, #security, #compliance, #discuss Last Tuesday I typed Sergei Ivanov into a sanctions screener and watched it explode. The API came back with 101 total matches : 50 from OFAC SDN, 1 from the UN Consolidated list, 50 from EU FSF, and zero from UK FCDO or BIS CSL. Threshold was 0.7. One common Russian name. A hundred and one alerts. I'd spent the previous week arguing that fuzzy logic was the only responsible way to catch sanctions evaders. They change spellings, swap transliteration...

When I entered the CANEX Create-Thon competition, I quickly realized I wasn't just competing against other creators but rather I was also competing against bad UX. The Gebeya platform requires users to complete a full email sign-in just to cast their vote. For organic traffic, that level of friction means a 90% drop-off rate. Instead of begging for votes, I decided to engineer a bypassing channel. I've detailed below how I built the zero-cost automated funnel using a code-first architectu...

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Same $10/$50 per million tokens. Fable 5.1's cache reads cost 75% less; Astra doubles rates above 272K tokens. Pick by workflow, not price.

Cybersecurity’s center of gravity is shifting. Cloud infrastructure, software supply chains, AI agents, data security, and autonomous defense are creating new categories and giving a new generation of security CEOs plenty to talk about. These 11 executives stand out not necessarily because they run the largest cybersecurity companies, but because their companies and ideas are increasingly part of the industry conversation. 1. Amiram Shachar, Upwind Amiram Shachar is having a particularly con...

Article URL: https://dexteroot.net/posts/2026/07/so-i-have-a-weatherman-which-also-tells-me-the-news-part-1/ Comments URL: https://news.ycombinator.com/item?id=49766671 Points: 4 # Comments: 0

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Several new studies have uncovered this long overlooked aspect of coral physiology that could be the key to the animals’ fate in a changing climate.

Understanding how ChatGPT’s latest memory upgrade works will help you get even more out of OpenAI’s productivity tool.

Amazon is a murky mess of ads, unknown sellers, misleading sales, and specious information. Stay safe while shopping on Prime Big Deal Days and beyond with these tips and tricks.

The FCC banned the sale of new consumer-grade Wi-Fi routers and mobile hot spots manufactured outside the US. Here’s what it means for you.

“You know ‘Bang Bus’? We don’t want that.”

The president has doubled down on data centers and AI. His base is running in the opposite direction.