A 150-Line `whentime tokyo london ny` CLI in Rust — and Why You Need IANA tzdata, Not 'UTC + N'
When you're working across time zones and someone asks "what time is it in Tokyo?", the answer should be one terminal command away: $ whentime tokyo l…
DevOps
⚑ Report a ProblemLatest DevOps news from Tech News
All topics
agents
ai
api
architecture
automation
aws
beginners
claude
cloud
database
devchallenge
devops
docker
googlecloud
javascript
kubernetes
llm
machinelearning
mcp
opensource
performance
productivity
programming
python
security
showdev
testing
tutorial
typescript
webdev
I wanted jq with memory, time ranges, and filters. So I built logdive
Your app is in production. Something broke at 2am. Your options are: grep through a rotated log file, squinting at terminal output. Chain together hal…
Как проверять CI-джобы локально с помощью Docker
Каждый, кто активно пользуется GitLab CI/CD, знаком с ситуацией: вы пушите изменения, ждёте минуту-другую, а пайплайн падает из-за мелкой ошибки линте…
How I built a self‑healing package manager
How I Built a Self-Healing Package Manager from Scratch (Rust + AI) The first tool that automatically resolves dependency conflicts by generating adap…
How I Built a Rust CLI Tool That Beats POSIX diff (and Saved My CI/CD Pipelines)
We’ve all been there. It’s a Friday afternoon, a deployment just went out, and suddenly the production reporting service crashes. After an hour of fra…
Building in public, week 6: PDF support is live — but I had to sacrifice content for it
TL;DR: I shipped PDF → image conversion this week. The cost? Three days redesigning the converter UI, and falling behind on community content. Solo de…
eBPF From Rust: The 34ms Ghost We Couldn’t See
When your profiler swears everything’s fast but your metrics are screaming bloody murder eBPF From Rust: The 34ms Ghost We Couldn’t See When your prof…
How to Benchmark LLM Inference Performance: TTFT, ITL, and Throughput Metrics
When deploying large language models to production, measuring performance accurately is critical. Whether you're using vLLM, SGLang, TensorRT-LLM, or …
Borrowed Strings: API Designs That Cut 94% of Allocations
The 6ms latency improvement from one character change — how &str over String transformed our hot path performance Borrowed Strings: API Designs Th…
Introducing fulgur: a blazing fast HTML-to-PDF engine in Rust — no browser required
fulgur — (noun, Latin) lightning, flash of lightning. I've been building fulgur , an HTML-to-PDF engine written in Rust. No headless browser, no Chrom…
From RocksDB Pain to GraniteDB Gain: Building a Blockchain-First Storage Engine in Rust
Building Ferrous Network exposed the limits of general-purpose databases. Here's why I'm writing GraniteDB from scratch. Hey folks, Altug here — found…
TCP worked, UDP silently died: shipping a DNS proxy to fly.io
I shipped v0.2.0 of dnsink — a Rust DNS proxy with threat-intelligence feeds and DNS tunneling detection — to fly.io this week. TCP worked on the firs…
How SNF Detects C2 Beacons on Air-Gapped Networks Without Ever Touching the Internet
How SNF Detects C2 Beacons on Air-Gapped Networks Without Ever Touching the Internet Most threat detection tools phone home. They pull threat feeds, p…
I Built a Security Scanner That Audits PDFs Before You Send Them. Here's How. [Devlog #10]
All tests run on an 8-year-old MacBook Air. You're about to email a contract. It looks clean. But it still has your name, your machine's hostname, the…
Privacy-first mind mapping app. Part 2: Rust Backend - Why the Pain Is Worth It
Choosing Rust for a backend can feel irrational at first. If your short‑term goal is raw development speed, Rust does not win. The compiler is unforgi…
A 3.7 KB Othello Engine: Bitboards in Rust, Raw WASM, No wasm-bindgen
Othello legal-move generation is seven lines of bitboard bitwise ops . I knew this existed; I'd never actually written it. So I built a Reversi engine…
Aximo — a local Rust STT API for CPU-only inference
I built a local speech-to-text API in Rust that runs on CPU I recently built Aximo, a self-hosted speech-to-text microservice designed to run locally …
I got tired of the Cloudflare web dashboard lag, so I built a native desktop client in Rust
Cloudflare is undoubtedly one of the best things to happen to the modern web. From Workers to R2 and the new D1 database, they are making serverless d…
# Rust and Formal Verification: How to Prove Your Code Actually Works
As a best-selling author, I invite you to explore my books on Amazon . Don't forget to follow me on Medium and show your support. Thank you! Your supp…
MCP Security Is Broken
MCP Security Is Broken Reading time: ~10 minutes Three CVEs. One major breach. One week. The Model Context Protocol is spreading faster than the secur…
Narwhal v0.6.0 – message broker for edge apps, now with channel persistence
hi again! i'm back with a new release of Narwhal, the lightweight message broker for edge apps i shared a while ago. the headline change in v0.6.0 is …
Adding AI Error Analysis to a macOS Menu Bar App with Gemini API
When a monitored script fails, most tools just show you a red icon. HiyokoBar does something better: it automatically sends the error output to Gemini…
I compiled Rust to WebAssembly to build a system design simulator that runs entirely in your browser!
Static diagrams don't fail. Systems do. That was the problem I kept running into when practicing system design. I'd draw boxes and arrows, convince my…
I Built and Shipped a $39 macOS App in One Day (Here's How)
Yesterday I had an idea. Today it's on Gumroad making money. Here's exactly how I shipped HiyokoBar — a menu bar HUD for engineers — in a single day. …
A Truth Filter for AI Output: An Experiment with Property-Based Testing
An AI wrote me a 36-kilobyte paper on how to build a second brain. It had theorems, proof sketches, and citation chains, and it read like the real thi…
I'm building a censorship-resistant social network in Rust — and I need your help
Most social platforms have a kill switch. Someone, somewhere, can throttle your reach, suspend your account, or just turn the whole thing off. I wante…
A Cross-OS Port Finder in Rust — One CLI, Three Completely Different Data Formats
A Cross-OS Port Finder in Rust — One CLI, Three Completely Different Data Formats A tiny Rust CLI that answers "who is holding port 3000?" on macOS, L…
Rust vs Go vs Zig for High-Performance Backend Services in 2026
Rust vs Go vs Zig: High-Performance Backend Services in 2026 Three languages compete for the performance-critical backend market. Each makes different…
Introduction to Blockchain Development: A Friendly Dive Into Web3 with Python and Rust
Hey there, blockchain enthusiasts! If you're just stepping into the world of blockchain development, you're in for an exciting journey. Blockchain isn…
Why Anomaly Detection Can't Block the Ingestion Pipeline
The first version of the anomaly evaluator ran inline. A batch of 100 readings flushed to TimescaleDB, then the same function called evaluate_batch , …