Latest Testing & QA news from Tech News
Most of us use Redis like this: SET name Alice GET name It feels simple. You send a command. Redis stores something. You get the value back. But I wan…
PDF generation is one of those things that works perfectly… until real users touch it. On localhost: npm run dev Open Chrome → print → PDF. Done. Then…
This module built one thing, from many angles: the container — the part of Spring that creates your objects, wires them together, and hands them out. …
Every engineering team hits this conversation at some point. Someone proposes GraphQL. Someone else says REST is fine. A third person mentions gRPC an…
When building high-concurrency backend services, two ecosystems dominate the conversation: Node.js and Go (Golang). If you ask the internet how they h…
A few years ago, choosing an ID format was easy. Most of us generated a UUID, stored it in the database, and moved on. Today things are different. Mod…
I Built a Consistent Hashing Ring in Pure Python and Finally Understood How Cassandra Distributes Data I've been using Cassandra and Redis Cluster for…
I learned this the annoying way: admin panels are not configuration systems. They can become one, but not by accident. Early on, it feels harmless. So…
Book: Decoupled PHP — Clean and Hexagonal Architecture for Applications That Outlive the Framework Also by me: Thinking in Go (2-book series) — Comple…
In this post, we'll build a practical AI-powered meal planning agent using HazelJS. This agent helps users create personalized meal plans, discover re…
Reflecting on two major technical challenges from my backend engineering internship, focusing on fault tolerance, infrastructure, and distributed arch…
Webhooks are usually discussed as something your application should process automatically. A payment provider sends an event. A Git hosting service no…
Every backend project I've worked on eventually hits the same wall. You start clean — one service, simple routes, everything works. Then slowly the re…
If you're shipping anything that takes money in Indonesia, two names come up before all others: Midtrans and Xendit. They're both solid, both support …
The Webhook Spoofing Vulnerability When engineering a B2B SaaS platform at Smart Tech Devs, relying on external services like Stripe, Shopify, or GitH…
If you’ve ever thought, “It’s just a WebSocket event,” this article is for you. Notification systems look simple on the surface, but in production the…
In my second week at work, I watched a senior engineer spend 3 days refactoring an API that took 1 day to build. The endpoint worked. The logic was co…
Error Handling in Node.js: Beyond Try/Catch (2026) Try/catch is just the beginning. Real-world error handling is about resilience, observability, and …
I'm a web design agency CEO teaching myself full-stack development in public. This is week 7 of a 16-week roadmap I built to go from React-only to ful…
Search looks simple from the outside. A user types something like: short-range copper module and expects the system to return the right product, maybe…
Originally published at spectredev.xyz . Cross-posted here for the Dev.to community. Building APIs that hold up under real traffic takes more than fas…
While building a file conversion and sharing app, my first implementation handled file conversion directly inside the API request. It worked. But as f…
Handling Time Zone Differences in Forex APIs: A Practical Developer’s Guide When I started building a multi-source forex data pipeline for a brokerage…
You hit "Pay" and the browser spins. Network timeout. Did the charge go through? You retry — and get charged twice. Idempotency keys solve this. They'…
I'm 2 weeks into learning Express.js. No bootcamp, no course. Just a roadmap, a goal, and 2-3 hours a day. This week I hit my Phase 2 checkpoint: buil…
Долго воспринимал Python как язык из соседнего мира. Где то там data science, pandas, ноутбуки, модели, эксперименты. А у меня обычный backend: API, м…
Retries in payment and order APIs are a classic footgun. Your client times out, retries the request, and you've just charged someone twice. The fix is…
There is a certain kind of frustration that only developers know. It is not the frustration of a hard problem. Hard problems are satisfying. It is the…
Security is not a feature you bolt on after launch. It is not the CISO's problem alone. It is not a checklist you run through before a compliance audi…
This is a submission for the GitHub Finish-Up-A-Thon Challenge What I Built I built a Distributed Authentication System as a long-term learning projec…