TOOLS2 days ago
The Test Looked Redundant. The Ninth Bug Needed It.
A 5/5 mutation score missed a regression. A ninth candidate then exposed why a redundant-looking test mattered.
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60articles · curated from global AI & Data Engineering sources
TOOLS3 days ago
Django 6.1's FETCH_PEERS collapses a 2,001-query loop into 2
Django 6.1's fetch_mode(FETCH_PEERS) cut a loop from 2,001 queries and 1.2s to 2 queries and 13ms, but I found it silently does nothing when combined with iterator() and gives no help at all on reverse relations.
TOOLS4 days ago
Nano Banana 2 Lite, Revisited: MCP 2.0, the New Interactions API, and Three Agent CLIs
The Nano Banana 2 Lite MCP server from July, updated: FastMCP is now MCPServer, google-genai 1.x gets a 400 from the Interactions API, and one server now runs in Claude Code, Codex and Antigravity CLI.
TOOLS5 days ago
I Optimized My Bump Version Tool and Made It 1,000,000x Faster Than Its Python Counterparts.
Hello again, fellow Rustaceans, Pythonistas in denial, and the three people on earth who genuinely...
TOOLS6 days ago
FastMCP Is Now MCPServer: Migrating a Python MCP Server to the MCP SDK 2.x
Step-by-step: moving a FastMCP server to the MCP Python SDK 2.x — what broke, what changed, what did not, and a redeploy of its Gemma 4 vLLM backend to a Cloud Run L4 GPU.
TOOLS6 days ago
AI-Generated Tests Can Make Coding Agents Worse. Here's How to Check Yours
ExecCritic found that weak generated tests reduced repair success. A runnable Python example shows how to catch a test that approves the wrong fix.
TOOLS9 days ago
How We Upgraded RabbitMQ to v4 Without Breaking 8M Daily Celery Tasks
Upgrading to RabbitMQ v4 threatened to break our entire usage of Celery, more specifically tasks with...
TOOLS9 days ago
Stop rebuilding from scratch: cache Docker layers on Cloud Build
Cloud Build runs on ephemeral workers, so your Docker cache vanishes on every run. Here's how to persist it in Artifact Registry with BuildKit's registry cache — uv stops re-downloading dependencies, builds get faster, greener and cheaper.
TOOLS10 days ago
An AI agent is just a while loop. I built one in 70 lines of Python, then tricked it into leaking my .env
Every framework, every job posting, and about half of LinkedIn wants to tell you what an "AI agent"...
TOOLS11 days ago
I Built a Version Bump Tool in Rust That Is 10,000x Faster Than Its Python Counterparts.
Hello, fellow version-bumping enthusiasts, sleep-deprived Rustaceans, and accidental software...
TOOLS11 days ago
Generosity Is a Default Setting
A USB tethering diagnostic that costs no cellular data to run, forty measurements across fourteen phones, and one free setting that took the worst run from 15 to 106 Mbps.
TOOLS14 days ago
My Dev.to CLI Got Its First Community PR. Image Uploads From Terminal.
devpub v0.3 adds image uploads via `devpub upload`. The catch: the Forem API has no image endpoint. Here's how we solved it, and the story of devpub's first external contributor.
TOOLS16 days ago
I raced six models against each other on DigitalOcean Inference. The cheapest one won.
Every time I put a model behind an endpoint I make the same lazy decision. I pick whatever I used...
TOOLS16 days ago
Who watches the watchdog? The boring work behind a monitoring SaaS
My last post about PulseWatch ended with a satisfying discovery: the monitoring bug I was...
TOOLS16 days ago
Badger: An E-Ink Badge I Use For Conferences
I attend conferences regularly, and for years I’ve wanted a badge that makes it easy for people to...
TOOLS17 days ago
I Tried to Beat Peter Norvig and Accidentally Became Ryan Gosling
A few days ago, I posted my submission for the DEV Frontend Challenge: Khachapuri made entirely with...
TOOLS17 days ago
Dev log #19 WebRTC v2 flows, agentic orchestration, and a perfectly synced vault
This week was a high-output sprint across the stack—from low-level p2p networking in Python to...
TOOLS18 days ago
Five bugs in my LLM app that never threw an error
I spent two and a half weeks building an agent that reads a project's code review history and...
TOOLS21 days ago
Your Python code is already assembly. I made it runnable.
PyAsm reads the exact text dis.dis() prints, and runs it. Hello World is six lines of assembly, and it's still Python.
TOOLS22 days ago
Why I Decided to Stop Using Claude Code
Claude is impressive, no doubt. But if you’re letting it do *all* your work, you’re sleepwalking into obsolescence.
TOOLS22 days ago
My Cloud Run Multi-Agent Fleet Passed Its Demo. The Architecture Was Still Wrong.
The correlation notice fired. Three sites, same anomaly type, inside the time window. The...
TOOLS23 days ago
datetime.now() <= end: The One-Line Comparison That Silently Blocked Every Request for 12 Hours
For twelve hours, a background service I run sat there doing nothing. No crash, no stack trace, no...
TOOLS24 days ago
I Built a Real-World Customer Payment Analysis Tool in Python
Hey guys, hope you're all doing well. Most programming projects start with something...
TOOLS25 days ago
We fixed the eval platform we're competing on: a TypeError that crashed three benchmark pipelines
This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. The PR:...
TOOLS25 days ago
I Was Learning PyTorch, Then I Accidentally Started Building My Own AI Training Framework
Honestly, Tensorless was not supposed to become this big. I was learning PyTorch. I wanted to...
TOOLS25 days ago
My scheduled task reported "success" every 5 minutes for 3 weeks. The process inside it had been crashing the whole time.
I run a one-person AI company: Claude Code writes and maintains the code, and most of what it builds...
TOOLS27 days ago
We tested "tokenize before you compress" against 452 configurations, and it mostly held up
A few weeks ago my friend @u84u and I (@ronak-create) had a simple, slightly annoying question: if...
TOOLS28 days ago
One rented /24 could eclipse a Kademlia node. Now it takes ten.
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. The...
TOOLS28 days ago
The test was green. Every real connection would have failed.
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. The...
TOOLS28 days ago
The alarm wasn't silent. It was lying.
This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. ...
TOOLS29 days ago
I Write Less Code Than I Used To. That May Be the Point.
Over the last year, my day-to-day job has changed in a way I am still trying to understand. I am...
TOOLSabout 1 month ago
Your agent ignored a failed tool call. Here's how to catch that in CI.
You ship an AI agent. It calls tools, reads results, calls more tools, answers. Most of the time it...
TOOLSabout 1 month ago
How to Reach Your Full Potential as a Programmer (It's Probably Not What You Think)
Every programmer wants to improve. We all dream about becoming the person who can look at a...
TOOLSabout 1 month ago
How do you form a group nobody can admit they're in?
Arun invoiced a design agency ₹1,20,000 in January. It's August. He is in a 4,000-member designers'...
TOOLSabout 1 month ago
The Suite Was Green. Four Binding Controls Hadn't Established Their Claims.
Part three of: OpenAI Says Verified Defenders Get More Access. I'm Going to Test That. On August 5...
TOOLSabout 1 month ago
Shipping a vision-model verdict on Bedrock and Lightsail
One FastAPI route, one Converse call with forced tool use, one container service — and the three AWS details that cost me the most time. 20/20 on the fixture set, median 880 ms against the live deployment.
TOOLSabout 1 month ago
[Dev Log][Python] Create short videos from photos and clips with Gemini 3.7 Flash: ReelCraft
Preface: It all started with a misunderstanding. I noticed a new page in the Gemini API...
TOOLSabout 1 month ago
Do I Still Need a Monkey Patch for Gemini Live?
No. And deleting 187 lines of it was the single biggest benefit of moving to ADK 2.x — but it was not...
TOOLSabout 1 month ago
My memory auditor said half my agent's facts were dead. Three were.
My coding agent keeps memory in flat markdown files. One fact per file, a frontmatter header, an...
TOOLSabout 1 month ago
Stop the event loop stall: a Sentry Python SDK fix for slow local-variable capture
This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. ...
TOOLSabout 1 month ago
Porting a Python PEG parser to Rust in 72 hours, and actually proving it worked
There's a joke that every Rust project starts with someone saying "we should rewrite this in Rust"...
TOOLSabout 1 month ago
Punchline, or Gut-Punch?
I was excited and also humbled to be given the chance to deliver the closing keynote talk...
TOOLSabout 1 month ago
What I learned building a long-lived AI agent (the boring version)
A practical log of building a long-lived Telegram AI agent — caching, providers, routing, memory, latency. No benchmarks. Just what actually happened.
TOOLSabout 1 month ago
Fable 5 Plays Pokémon Sapphire Vision-Only: Notes on a 2,000-Decision Run
This run wasn't designed to discover anything new. It was collecting confirmations on three things:...
TOOLSabout 1 month ago
The RPC said Base was healthy. The first contract read still failed.
This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry. ...
TOOLSabout 1 month ago
I Found Two Bugs in Zulip. The Maintainers Had Filed Both Two Weeks Earlier.
A Bug Smash hunting story: two rediscovered bugs, one claim-etiquette call, an unreported twin in the newest importer, and a disagreement with an AI about the right fix.
TOOLSabout 1 month ago
Serving Gemma 4 2B on a Single TPU v5e Chip with MCP and Antigravity CLI
This article is the v5e follow-on to the v6e-1 debugging guide. Same MCP tooling, same Antigravity...
TOOLSabout 1 month ago
This Bug Has Never Fired in Production. I Fixed It Anyway
A Python generator in Zulip's Microsoft Teams importer yielded a list and then cleared it. Every batch was the same object. Here's why latent bugs deserve fixes.
TOOLSabout 1 month ago
How vLLM Actually Manages KV Cache (vs the Toy Version I Built)
A few weeks back I built my own mini version of PagedAttention, a block manager, a free list, copy on...
TOOLSabout 1 month ago
Why I stopped writing audio preprocessing scripts and built a tool instead
Every time I start a TTS fine-tuning project, I lose the first day to roughly the same set of...
TOOLSabout 1 month ago
I shipped a fix for a breaking change. The code could never select it.
This is a submission for DEV's Summer Bug Smash: Smash Stories, powered by Sentry. Upstream...
TOOLSabout 2 months ago
Dev log #14 Hardening the DHT against Eclipse attacks and the endless battle with flaky p2p tests
Dived deep into libp2p security this week with a new IP subnet diversity feature for the Kad-DHT,...
TOOLSabout 2 months ago
The Bug That Crashes Your Import Is the Lucky One
Fixing Slack import robustness in Zulip: one malformed timestamp aborted entire migrations, and the NaN case corrupted them silently.
TOOLSabout 2 months ago
Your link checker thinks deleted Telegram bots are alive
Delete a Telegram bot and https://t.me/your_deleted_bot keeps returning HTTP 200 with a page that...
TOOLSabout 2 months ago
The Alpine Mirage: How Upgrading Python Broke My Build and Led to a Truer Security Posture
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. The...
TOOLSabout 2 months ago
OpenWorker: Andrew Ng's Local-First AI Coworker, Explained for Developers
OpenWorker shipped in late July 2026. It is MIT-licensed, runs on your own machine, and takes your...
TOOLSabout 2 months ago
I Added a Second Brain to My RL Agent - Day 7 (Actor-Critic)
SERIES: Learning RL and JAX in Public - from zero to DeepMind. Day 6 ended with REINFORCE...
TOOLSabout 2 months ago
How I Cut LLM Token Usage by 99% — 3 Production Engineering Steps
At Idyllic Services, I was working on an automated candidate sourcing system running LLM calls at...
TOOLSabout 2 months ago
LangGraph isn't cheaper than LangChain — unless you opt out of its defaults
LangGraph isn't cheaper than LangChain — unless you opt out of its defaults Cost-audit...
TOOLSabout 2 months ago
Most free mahjong games can deal you a board you can't finish. I built mine backwards.
Mahjong solitaire is a matching game: you take pairs of identical tiles off a 144-tile pile, but only...