I Extracted the Audio From 20 Video Files in 2.2 Seconds — Here's the Batch Pipeline
I help maintain a small archive of recorded meetings and talks. The videos are useful, but nobody re-watches a 40-minute recording to find one decis…
DevOps
⚑ Report a ProblemLatest DevOps news from Tech News
All topics
agents
ai
api
architecture
automation
aws
backend
beginners
cloud
database
devchallenge
devops
docker
javascript
kubernetes
llm
machinelearning
mcp
node
opensource
performance
productivity
programming
python
security
showdev
testing
tutorial
typescript
webdev
Export App Store and Google Play reviews to Excel and find the top complaints
Disclosure: I built the reviews scraper used in this post and earn money when people run it. The pandas part works with reviews from any source. App…
Quantified Self: How I Handled 100GB of Messy Biosensor Data with Polars and Dask
We live in the era of the "Quantified Self." Between my Oura ring, Apple Watch, and continuous glucose monitor (CGM), I’m generating more data than…
The Test Wasn't Wrong. It Was Answering an Older Question.
The Test Wasn't Wrong. It Was Answering an Older Question. I shipped a change I had reviewed, simulated, and deployed. An hour later my acceptance s…
Evaluate RAG retrieval before changing your chatbot prompt
Before tuning a prompt, check if the retriever actually surfaced the evidence. A fluent answer often hides a missing document. And a retrieved docum…
APIWatch: Checking API Traffic and Subscription Controls with WSO2 API Manager
I recently worked on a project called APIWatch using Python and WSO2 API Manager. It is a small monitoring tool that reads API traffic logs and help…
PitGraph: building an F1 strategist whose memory is a graph
How I built a multi-agent race-strategy assistant on FalkorDB in four days for Graph Hacks, and what the graph made easy (and hard). Ask a Formula 1…
Как ускорить ручное тестирование интеграций с RabbitMQ с помощью библиотеки pika
Чаще всего для ручного тестирования интеграций с RabbitMQ используют UI-клиент. Но не всегда это удобно и позволяет тестировать быстро, особенно ког…
Model Context Protocol (MCP) for Local LLMs: Connect Ollama & vLLM to Workstation Tools
📌 The Executive Verdict: The Model Context Protocol (MCP) Decoupling Anthropic's open-standard Model Context Protocol (MCP) resolves the fundamental…
Cronbach's Alpha Explained: Formula, Worked Example, Python/R Code, and a Free Calculator
You built a survey with several questions that are supposed to measure the same thing (say, "job satisfaction" or "stats anxiety"). Before you avera…
I Built a Product Listing Writer That Costs $0 Per Listing to Run
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built A friend who sells on Etsy told me her weekly r…
48-Hour Field Notes: Exit Code 137 at Hour 31 Was Not a Bug in My Code
I run long jobs on purpose, because short jobs lie to me in pleasant ways. A loop that finishes in ninety seconds never teaches you what happens whe…
Testing an AI Refund Workflow: Allow, Deny, Modify, and Escalate
A support agent handling a refund might need to look up a customer, submit an amount, and explain why the refund is appropriate. Each step raises a…
48-Hour Field Notes: The Batch Worker Vanished and My Re-Run Redid Every Item
Two days ago I started a batch of prompt evaluations, closed the laptop lid, and assumed the free server would keep chewing through the queue while…
Properties Without Witnesses Are Decorations: A Falsifiability Gate for Agent Patches
A property that passes on the patched tree and on the pre-patch tree carries no information. That is the first thing to measure, before you trust an…
From Paper to Insights: Build Your Own Private Medical RAG with Pinecone, Ollama, and PaddleOCR
Let’s be honest: looking at a blood test result or a medical lab report feels like trying to read ancient hieroglyphics. You see numbers like Albumi…
Localizing Open-Source ERP: How Odoo 19 is Adapted for Solar Hijri, Complex Tax, and RTL
Enterprise Resource Planning (ERP) adoption in non-Western markets frequently faces a severe bottleneck: native ERP engines are deeply hardcoded aro…
Whisper Hallucinations: 'Thanks for Watching' in 9% of My Transcripts
A user emailed me a screenshot of their feedback report. Under "Communication," my scoring model had written: "Closed the answer with 'Thanks for wa…
I Shipped 2,000+ Free Calculators With Zero Backend. Here's What I Learned.
When people hear "calculator website," they picture one page with a few inputs. Mine has over two thousand calculator pages — income tax, loan insta…
🛡️ FreelanceShield OS: An Open-Weight AI Micro-SaaS to Stop Scope Creep & Unpaid Work
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built Every independent freelancer—whether a video ed…
Track new job postings from Naukri, StepStone and Job Bank Canada for a niche role (Python)
Disclosure: I built the Apify Actor used in this tutorial. This post was written with AI assistance. If you are watching the market for one specific…
Write your agent as functions first, add a framework later
Plenty of agent tutorials open with a framework import. I'd start with ordinary functions that call a model, return structured data, and invoke tool…
Following the Money with a Graph: Building LedgerLens on FalkorDB
Synthetic data. Risk signals, not accusations. Imagine you've just become president of your housing society and you ask one simple question: where d…
Finding the Bugs I Built an AI Agent to Prevent: Building Deterministic Guardrails with LangGraph & Python
`` A real debugging log: fabrication bugs, deployment gaps, and false test passes found and closed across 6 rounds of adversarial testing. System pr…
Counting OpenAI Tokens per Request in FastAPI — Without Touching My Use Cases
I'm rebuilding evorag , a Python retrieval service: it chunks documents, embeds them with OpenAI's text-embedding-3-small , stores vectors in Postgr…
I open-sourced a network monitor — strangers on the internet shipped the Windows port
Two weeks ago I open-sourced Snitch , a privacy-first network traffic visualizer. Last week it hit 238 GitHub stars and got picked up by one of the…
SecureLocal AI: A Local-First Python Security Auditor for Hacktoberfest Week 2
What I built For Hacktoberfest 2026 Week 2's Side Hustle challenge, I built SecureLocal AI : an offline-first desktop tool for a first-pass review o…
DabbaETA: a 'will this tiffin be late?' predictor that never sends a customer's address to the cloud
This is a submission for the HF26 Challenge: Side Hustle It's 1 PM and the phone won't stop ringing If you run a small tiffin service in India, you…
How to Compare More Than 5 Keywords in Google Trends on One 0-100 Scale
If you've ever tried to chart 12 keywords from Google Trends, you've hit the wall: the compare box takes 5 terms max . The obvious workaround (run t…
Checkout Rollback Safety: 4 SaaS App Fingerprinting and Error-Grouping Signals
Short answer: group checkout errors by exception type and stable application stack frames, then compare each fingerprint across release and environm…