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My journey into tech: from traffic manager to future developer
19+ min ago (22+ words) Hey, dev.to! 👋 I'm Maycon, a Systems Analysis and Development student at UNICID, currently making a... Tagged with career, learning, python....
Context Window Management for Long-Running AI Agents: 4 Patterns That Work
43+ min ago (650+ words) The agent had been running for four hours and it was arguing with itself about a file it had already fixed. For years I'd thought about context window management as a packing problem. How do I fit more in. That…...
A Telegram job alert bot in 60 lines of Python, on live ATS data
32+ min ago (456+ words) Job boards go stale fast. By the time a weekly digest reaches you, the interesting roles have been open for a month. So let's build the smallest thing that fixes that: a Telegram bot that wakes up, asks one API…...
The Illusion of String.length: How to safely count Unicode, Emojis, and Words in JS
1+ hour ago (173+ words) If you are building a text input that restricts users to a specific character limit (like a tweet, an SMS gateway, or an SEO meta tag), your first instinct is probably to use String.prototype.length. If you are doing…...
The more aggressive matmul kernel lost to the register budget
54+ min ago (171+ words) The WebGPU matmul sweep started with a naive kernel, then added 16 by 16 workgroup tiling and a 4 by 4 output block per thread. At a 2048 cubed matrix size, the measured time moved from 47.24 ms for the naive kernel to 17.23 ms for tiling…...
Make Fully Customizable QR Codes (Actually)
55+ min ago (28+ words) Tired of usual bland QR codes that don't show off your brand? I made a simple API to create fully... Tagged with python, api, backend, tools....
56 fault-injection tests passed. The one that injected nothing failed.
1+ hour, 20+ min ago (415+ words) I was building a tool that detects when data quietly changes meaning — a vendor switching units, a source dropping a field, an undocumented enum appearing. The kind of failure where every test passes and every job is green. Claims about…...
Distributed Locks
1+ hour, 25+ min ago (110+ words) One-liner: A distributed lock ensures that only one node in a cluster can perform a critical operation at a time — preventing race conditions across services. In a single-server world, a mutex or semaphore handles concurrency. But in distributed systems: Classic…...
Three things that bit us moving a document scanner fully into the browser
1+ hour, 30+ min ago (596+ words) I work on LensUp, which does exactly that — the whole pipeline runs in the tab, and files are never uploaded. Disclosure up front: it's our tool, and this post is about the parts that were harder than the pipeline itself....
gh api --paginate --slurp --jq 'length' Counts Pages, Not Issues
1+ hour, 38+ min ago (415+ words) gh api --paginate --slurp --jq 'length' is the command everyone reaches for to count issues in a repository. It does not count issues. It counts pages. I found this while writing pagination recipes for a toolkit, and then found the…...