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Juan Torchia2d ago • 5 min read
m2cgen: export your ML model without shipping Python to production
Train in Python, deploy in Java, Go, or whatever you've got. m2cgen converts your scikit-learn model...
#english#experiments#machinelearning#opensource
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Juan Torchia3d ago • 8 min read
TigerFS: A Full Filesystem Inside PostgreSQL (And Why This Obsession Feels Like a Symptom)
Someone built a complete filesystem inside PostgreSQL. Last year I shoved Linux's entire git history...
#english#experiments#experimentos#postgres
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Juan Torchia2d ago • 9 min read
I Measured How Much Each Agent Design Decision Costs in Tokens (The Numbers Make Me Uncomfortable)
Long vs short prompts, tool calls vs plain text, accumulated vs summarized context. I measured the r...
#english#experiments#typescript#optimizacion
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Juan Torchia3d ago • 8 min read
Research-Driven Agents: Making the Agent Read Before It Codes
Months watching agents dump code without context and break everything. I ran a real experiment: forc...
#english#experiments#typescript#workflow
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Juan Torchia3d ago • 9 min read
Your Accessibility Score Is Lying to Your Face
I scored 98/100 on Lighthouse and axe on juanchi.dev. Then I asked someone who actually uses a scree...
#english#experiments#react#frontend
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Juan Torchia3d ago • 8 min read
I Stuffed a Tiny LLM Inside a Next.js App — Here's What I Learned
I reproduced the tiny LLM experiment that blew up on Show HN: Gemma running in the browser, no API k...
#english#experiments#javascript#nextjs
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Juan Torchia3d ago • 7 min read
Open Data and Creativity: How I Made Buenos Aires Trains Play Music
A sonification experiment using GTFS schedules from Argentina's commuter rail network — and the stor...
#english#experiments#datosabiertos#transporte
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Juan Torchia3d ago • 6 min read
How I Built juanchi.dev on the Most Bleeding-Edge Stack of 2025: Next.js 16, React 19, Tailwind v4 & Railway
An honest postmortem of building my portfolio with the freshest stack of 2025. Spoiler: almost every...
#english#experiments#react#portfolio
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Juan Torchia2d ago • 7 min read
Qwen3.6-35B-A3B Runs on My Laptop and Draws Better Than Claude Opus 4.7
A 35B open-weight model running on my machine beat Claude Opus 4.7 at a concrete task: drawing a pel...
#english#experiments#ialocal#llmlocal
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Juan Torchia15h ago • 8 min read
Defluffer promises -45% tokens. I measured the semantic cost of that savings and it's uncomfortable
The 45% token reduction is real. What nobody measures is how much implicit context you lose along th...
#english#experiments#llm#agentesia
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Juan Torchia3d ago • 9 min read
I Dumped Linux's Entire Git History Into a Database — and What I Found Felt Like Archaeology
What happens when you stop treating your commit history like logs and start treating it like data. I...
#english#experiments#postgres#devtools
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Juan Torchia3d ago • 5 min read
Themis: Serious Cryptography Without Losing Your Mind
Themis is the crypto library devs actually needed: AES, ECC, and forward secrecy wrapped in an API t...
#english#experiments#opensource#cryptography
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Juan Torchia3d ago • 8 min read
Google Maps for Codebases: I Pasted My Own Repo URL and Got a Little Scared
There's a tool that lets you paste a GitHub URL and ask anything about the code. I used it on my own...
#english#experiments#nextjs#ai
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Juan Torchia3d ago • 8 min read
Surelock and Deadlocks in Rust: I Got Burned at 2am and Now I Get Why This Has 214 Points
I had Rust code in production with mutexes. It deadlocked at 2am. Zero compiler warnings. When Surel...
#english#experiments#produccion#sistemas
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Juan Torchia15h ago • 8 min read
I Wrote a Python Interpreter in Python. What I Learned Has Nothing to Do With Python
A 150-point HN post sent me down a rabbit hole building a Python interpreter from scratch. I didn't ...
#english#experiments#llm#arquitectura
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Juan Torchia3d ago • 9 min read
I Ran Gemma in the Browser, No API Keys, and It Broke My Brain
There's a deeply embedded belief in the dev community about AI in production that's just wrong: that...
#english#experiments#react#nextjs
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Juan Torchia3d ago • 9 min read
Gmail, SPF, DKIM, DMARC, and 3 Weeks of Hell: 99% Reputation Isn't Enough
I sent the first batch from this blog to 300 subscribers and half landed in spam. I configured every...
#english#experiments#infraestructura#email
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Juan Torchia3d ago • 13 min read
Bondi Sonoro: A Build Log of Real Data, Generative Music, and the MTA.me Mechanic
From static train GTFS to real-time bus positions. A full walkthrough of the decisions, the bugs, th...
#english#experiments
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Juan Torchia3d ago • 8 min read
Reverse Engineering SynthID: What Happens to Gemini's Watermark When the Model Runs in Your Browser?
Someone's reverse engineering Google's watermark detection system. I ran Gemma in the browser last m...
#english#experiments#webgpu#gemma
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Juan Torchia3d ago • 7 min read
Claude Code Routines: Weeks Ignoring It and I Finally Get Why It Matters
I used Claude Code for weeks without setting up a single routine. Assumed it was overhead for people...
#english#experiments#typescript#claudecode
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Juan Torchia3d ago • 8 min read
Google Gemma 4 Runs Natively on iPhone: I Tested It and the Gap Between 'Works' and 'Useful' Is Still Massive
Gemma 4 runs offline on iPhone. I replicated it on my 13 with a nearly full 128GB. It works. But the...
#english#experiments#inferencialocal#google
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