[Dev Log][Node.js] Feedly Classic is gone, so I built my own FeedFlow (Part 1)
Introduction: Since Feedly's redesign, I haven't been able to get used to the interface. I especially miss the high-density, single-column, no-nonsens…
DevOps
⚑ Report a ProblemLatest DevOps news from Tech News
All topics
agents
ai
api
architecture
automation
aws
backend
beginners
career
database
devchallenge
devops
docker
javascript
kubernetes
llm
machinelearning
mcp
opensource
performance
productivity
programming
python
security
showdev
softwareengineering
testing
tutorial
typescript
webdev
Private avatars in a Node.js SaaS: which object storage, and how to sign downloads
Use a private bucket with short-lived presigned URLs when an avatar belongs to exactly one user, and reach for a public CDN-backed bucket only when th…
Picking a text-to-image API for a SaaS app: REST, pricing, and safety
If you just want the recommendation: call a plain REST image generation endpoint from your Node.js backend, keep the prompt-in / image-out path as dum…
What a forged bank statement looks like at the byte level
I spent a chunk of my career in KYC/AML and document verification, mostly looking at things people had uploaded hoping nobody would look too closely —…
Alibaba's Open-Code-Review: A Game Changer for Code Quality?
I saw this release from Alibaba on GitHub: alibaba/open-code-review . As someone who's spent years wrangling code quality in large Web2 systems and no…
NestJS v12.0 vs. Ditsmod v3.0: Application Lifecycle and Graceful Shutdown (Part 5)
Welcome to Part 5—the grand finale of our "NestJS v12.0 vs. Ditsmod v3.0" series! Over the last four articles, we have unpacked the strict Dependency …
Streaming Long AI Jobs to the Browser: SSE Patterns From Building an Audit Tool
The first version of the spectr-ai web frontend had a spinner. You uploaded a contract, the spinner spun, and several minutes later results appeared, …
NestJS v12.0 vs. Ditsmod v3.0: Dynamic Modules, Providers, and the Power of Extension Groups (Part 3)
Welcome to Part 3 of the "NestJS v12.0 vs. Ditsmod v3.0" series! In our previous articles, we explored the strict Dependency Injection hierarchies and…
NestJS v12.0 vs. Ditsmod v3.0: A Deep Dive into Node.js Framework Architectures (Part 1)
If you are building enterprise-grade Node.js applications with TypeScript, chances are you are already deeply familiar with NestJS . It has become the…
Elixir vs Node.js: Why Developers Are Exploring Elixir for Modern Backend Systems
Modern backend development has been dominated by JavaScript runtimes like Node.js for many years. Node.js changed the way developers build web applica…
🔄 The JavaScript Event Loop: From "What?" to "Oh, NOW I Get It!" (A Deep Dive)
The most misunderstood part of JavaScript — finally explained with analogies, diagrams, and zero hand-waving. If you've ever wondered why setTimeout(f…
Node.js 26.5.0: What's New for Web Streams and Error Handling
I saw the Node.js 26.5.0 release announcement the other day, and as someone who's spent years wrestling with I/O and data processing, a few things imm…
ML Without Magic: Building a Tiny Language Model in Pure Node.js and Watching Every Weight Change
Tokenization → embeddings → causal Transformer → LM head → softmax → loss → backpropagation. No TensorFlow, no PyTorch, and no hidden autograd. Reposi…
You Might Not Need Kafka: Building a Job Queue with PostgreSQL
It's easy to reach for the popular tool before asking what your system actually needs. For job queueing, the usual advice is to use RabbitMQ or Kafka.…
How I Built a Free AI Prompt Library With Node.js and PostgreSQL — From Zero to Live in 30 Days
If you have been following my Dev.to articles, you know I built Chatzyo — a real-time video chat platform using WebRTC. That project taught me a lot a…
Arrays Explained from Memory to Big O (With Real Benchmarks)
This Loop Should Delete Three Items. It Deletes Two. scores = [ 45 , 30 , 88 , 92 , 15 , 67 ] for score in scores : if score < 50 : scores . remove…
Structured Logging for Node.js
In Monitoring a SaaS in Production we wired up metrics and alerts so the team knows something is wrong within minutes of it happening. Metrics tell yo…
Feature Flags and Safe Rollouts
In Audit Logs You Can Trust , we built a system that answers "who changed what, and when." Feature flags answer a related question: "who gets to see t…
Caching Strategies for a SaaS
In Disaster Recovery and Backups , we made peace with the database disappearing entirely: accept it can happen, and make recovery boring and rehearsed…
The Bug Only Happened After I Switched LLM Providers
The request succeeded. The response was valid JSON. The SDK did not throw an exception. And the application still broke. The bug appeared after I swit…
Stop triaging CVEs that never touch your code
Every serious engineering org runs some form of software composition analysis. And almost every one of them has the same quiet failure mode: the scann…
A Production Security Checklist
We spent the last article making the app fast. This one is about making sure it's still standing when someone tries to break it. That's the uncomforta…
s3fifo 1.0: Zero-Allocation S3-FIFO Cache for Node.js is Ready for Production
Disclaimer: As a non-native English speaker, I used AI to help structure and polish this article. A few dayss ago, I shared Implementing a Zero-Alloca…
Pulseboard: self-hosted HTTP uptime monitoring without the SaaS bill
Pulseboard: self-hosted HTTP uptime monitoring without the SaaS bill I wanted something like Uptime Kuma — lightweight, self-hosted, easy to run — so …
How to Detect Event Loop Freezes in Node.js
You've probably seen this: Kubernetes probes are green, /health returns 200, CPU isn't on fire - and users are timing out. Process is up. Just not doi…
Unhandled Promise Rejections in Node.js: Why They Silently Kill Jobs
A background worker sits quietly for weeks, chewing through a job queue without incident, and then one Tuesday afternoon it disappears mid-batch, taki…
The Dirty Secret Behind AI Agents (Demo 🚀)
For quite a while now, I've had the feeling that AI agents are surrounded by this mystical aura. Nobody really knows what they're doing, they're proba…
TypeScript 5.5 Explained Simply: Mastering Inferred Type Predicates
TypeScript 5.5 brings a game-changing feature: inferred type predicates. But what does this mean for your code? In this post, we explore how to harnes…
My app's anti-theft feature locked every user out
A real incident from the finance app I build solo. The security design was textbook. That's exactly why it bit me. The textbook setup Short-lived acce…
I turned my phone into a remote deck for my Windows laptop — no cloud, no accounts, one npm start
It started with the dumbest problem in computing: I'm in bed, a movie is playing on my laptop across the room, and pausing it requires physically gett…