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Cómo solucionar "Access Denied" al usar pip install en Windows Explicación técnica El error [Error 5] Access is denied durante la instalación de paquetes como mitmproxy (especialmente cuando incluyen extensiones en .pyd ) ocurre principalmente por problemas de permisos en el directorio temporal de Windows ( %TEMP% ). Cuando ejecutas pip directamente, el proceso intenta descomprimir y compilar dependencias (como cryptography ) en carpetas temporales bajo AppData\...

Every developer has the same nightmare. Someone runs a command on the wrong database, a collection gets dropped, and suddenly the data is just gone. Your last backup was from midnight, so you can restore that, but you still lose everything that happened after midnight. I wanted something better. Not just "restore last night's backup" but "restore the database to the exact second before the drop happened." That feature has a name: point-in-time recovery, or PITR. This post is about how I built...

Your open-source project probably added an AI-contribution policy in the last few months. Apache has one. The Linux Foundation has one. The OpenSSF Technical Advisory Council is finalizing a foundation-wide one right now. Bitcoin Core, ripgrep, uv, and dozens of smaller projects have copied the pattern. If you maintain something popular, you've either written one or you're about to. Almost all of them say some version of the same three things: disclose when you use AI; a human must review and...

Cross-posted from the Loopress docs Loopress is a toolset to make WordPress reproducible and reviewable via Git . Versioned snippets, Composer without SSH, and more coming... Check Loopress You need to add a PHP dependency to a WordPress site. Maybe a PDF generation library, a CSV parser, an image manipulation package. Something available on Packagist. Here's what the standard workflow looks like. The current workflow If you're on managed hosting (most clients...

In a cinder-block clinic in one of Rwanda's rural districts, a community health worker unlocks her phone, opens a chat window, and types a question that, two years ago, she would have been forced to answer alone. A child has a fever that has not broken in three days. The nearest doctor is hours away by road, and the road, in April, is mostly mud. She describes the symptoms in Kinyarwanda, then in English, then in the awkward hybrid that her training has taught her the machine prefers. A few seco...

This is the next installment in my "Claude Code environment" series. In the previous post on the self-audit frustration loop , I wrote about a "never-ending improvement loop." This time I want to dig into what sits at the root of it: detecting and self-correcting context injection bloat . At the start of every session, Claude Code unconditionally injects the full contents of rules/*.md , ~/.claude/CLAUDE.md , ~/CLAUDE.md , and MEMORY.md . Every time you add a rule, this byte count silen...

discovery that changed how I think about AI evaluation — and led me to build an open-source testing framework. ───────────────────────────────────────── Introduction I was proud of my AI tutor called ARIA. Every metric looked excellent: deepeval faithfulness: 0.94 RAGAS context precision: 0.89 Automated test pass rate: 94% I thought ARIA was ready. I was wrong. When real students started using it, the Socratic compliance rate was 22.2%. Same system. Same day. Two com...

Throughout my career, I’ve held many roles in the QA conversation: As a developer, waiting on test teams to validate features before a release could ship As a tech lead, watching sprint capacity dwindle while we converted Jira stories into test cases by hand As an architect, auditing a test repository with 4,000 cases where no one knew which ones mattered So when “AI test generation” started appearing as part of every testing product, I was both interested…and skeptical. Afte...

You add [MemoryDiagnoser] and [Benchmark] to a class, run dotnet run -c Release , and BenchmarkDotNet hands you back a beautifully formatted table: mean, median, standard deviation, allocated bytes per operation. It's one of the best measurement tools in any ecosystem. And then what? You read the numbers. You compare them, in your head, to what you remember from last week. Maybe you screenshot the table and paste it into a Slack message. Maybe you don't, because nothing regressed...

Gemini 3.6 Flash charges you for thinking tokens on top of the answer, and how many it spends is a dial you control per request. On the same 120-word writing task, the default setting billed $0.03316 and the minimal setting billed $0.00110, a 30x swing for output a reader could not tell apart. That dial is the most important cost decision on this model, and it comes with one sharp edge. Gemini 3.6 Flash went generally available on 2026-07-21 at $1.50 per million input tokens and $7.50 per mil...

Overview While deploying a static documentation site using AWS S3 , CloudFront , and Cloudflare , I came across several edge cases that weren't immediately obvious from the documentation. This post summarizes the issues, their root causes, and the solutions that worked. I'm documenting these as technical notes for future reference, and hopefully they'll be useful to others facing similar problems. 🛠️ Lessons & Gotchas Lesson 1: Local Redirect Caching I...

Introduction The speed of execution is what makes AI great these days the ability to generate code or entire features that would normally take a full day,in a few minutes of prompting. That's incredible, in the grand scheme of things. What differentiates a senior engineer from a junior one is the sheer willingness to dig deeper into code to review it, question it, and spot issues before it ever gets merged into production. But that instinct comes with experience. Senior developers have se...

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