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DEV Community · Technology

Beyond the Badge: What Happens When We Redefine Leadership?

We see it on our professional feeds every single day : an election result announced, a campus lead appointed, or a post thanking mentors for a new title. There is real value in celebrating these milestones. Stepping into public roles takes courage, and ensuring projects execute smoothly requires ge...

Vasundhara 4 days ago

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DEV Community · Technology

PostgreSQL psql: Schema Navigation Quick Reference

A short refresher for navigating PostgreSQL databases, schemas, and objects from the psql command line. Schemas List all schemas: \dn List schemas with additional information: \dn+ Check the current schema search path: SHOW search_path; Set the schema search pa...

Amelye Chatila 4 days ago

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DEV Community · Technology

My First GitHub Project: From a Local Folder to GitHub Using Git & SSH

Introduction It is important to note that Git and GitHub are not the same thing and have different purposes. Git is a version control system that runs on my PC and helps track changes to files. GitHub on the other hand is an online platform where Git repositories can be stored, shared, an...

Elijah Karimi 4 days ago

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DEV Community · Technology

My First GitHub Project: From a Local Folder to GitHub Using Git and SSH.

Introduction The following is a step-by-step process of how i was able create my first GitHub project from a local folder and upload it to Github using Git and SSH. Creating a local folder using git. Using Gitbash, I wanted to see the list of files and directories on my pc. I...

Gabriel Wainaina 4 days ago

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DEV Community · Technology

Deploying My First Web Server with Nginx

Today I worked on a simple but important DevOps task: deploying a web server using Nginx on Ubuntu. Instead of only learning the theory, I wanted to understand the practical flow of how a web server receives a request and serves a webpage. What I Did Installed and verified Nginx Starte...

Beny 4 days ago

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DEV Community · Technology

Completion Is an Ownership Boundary

An async method can finish its useful work and still be holding lifecycle state that tells the rest of the system it is active. That sounds like a tiny implementation detail. Under concurrency, it becomes a contract bug. I recently inspected a committed C# fix where an attempt could settle while t...

Ivan Rossouw 4 days ago

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DEV Community · Technology

Product Engineering Alignment

A feature takes three days to code and three weeks to deliver. The difference is not always engineering capacity. A developer starts implementation and discovers that an eligibility rule is undefined. Product needs an answer from operations. A missing UX state appears next. Then engineering finds t...

mjodeh 4 days ago

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DEV Community · Technology

This was an increadible package!! It was appearing on pub.dev for just a single word like "SOS" search!! Go check this out!

I was tired of SOS apps failing in dead zones, so I built a pure Dart, 100% offline TFLite crash detection engine. Bhagya Prasad Dannina...

BHAGYA PRASAD 4 days ago

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DEV Community · Technology

My Experience Running a Homelab on Oracle Cloud’s Free VPS

It’s been a while since I wrote a blog post. Recently, I decided to get back into writing and document something I’ve been playing around with: setting up a small homelab environment on an Oracle Cloud Free Tier VPS. As a software engineer, I’ve always been interested in what happens behind the scen...

Kriss Sachintha 4 days ago

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DEV Community · Technology

Building a Private Agentic OS with Local LLMs: Lessons from Eliza, Hister, and the Planning Problem

Originally published on tamiz.pro. Introduction We are witnessing a fundamental shift in software architecture: the transition from passive APIs to active agents. While the industry has been obsessed with the race for Artificial General Intelligence (AGI) through massive cloud models, a...

Tamiz Uddin 4 days ago

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DEV Community · Technology

A Developer's Checklist for Every RAG Lifecycle (Beyond Chunk-Embed-Search)

If your mental model of RAG is "chunk → embed → search → LLM," you're missing about 80% of what actually makes a RAG system production-ready. Here's a practical checklist across all 10 lifecycles I ran into while building one. Full technical breakdown with diagrams is on Hashnode (linked above) — t...

Tanmay 4 days ago

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DEV Community · Technology

Understanding the Git Workflow: Working Directory, Staging, Commit, and Push

The first time we were introduced to Git, we really didn't know where our code was going to be saved until I learned that Git is part of a control system. It keeps track of changes made to files in a project so you can: track what changed, see previous versions of what you were working on to undo mi...

sam manox 4 days ago

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DEV Community · Technology

Tracking Heart Health with Wearable IoT Sensors

Tracking heart health with wearable IoT sensors has moved from a niche research exercise to something a consumer smartwatch does before breakfast. A photoplethysmography sensor no bigger than a fingernail can now estimate heart rate, detect irregular rhythms, and flag potential atrial fibrillation,...

Fu'ad Husnan 4 days ago

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DEV Community · Technology

Idempotency is not a key, it's a contract

Every payments API has an Idempotency-Key header. Far fewer have written down what it means, and the ones that haven't are usually running a SELECT … WHERE key = ? before the insert and calling the job done. A key is a token. A contract is a set of answers: what counts as the same request, how long...

Rasikh 4 days ago

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DEV Community · Technology

Your Amazon scraper is returning mixed currencies and won't tell you

If you scrape Amazon through rotating residential proxies, your price column probably contains dollars, euros and zloty at the same time. Nothing in the markup says which is which, no error is raised, and the mixture changes from run to run. I spent a week measuring what an Amazon scraper actually...

Roman 4 days ago

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DEV Community · Technology

How to Create an MCP Server: Tutorial

Model Context Protocol (MCP): Building an AI-to-API Bridge 1. What Is MCP? Model Context Protocol (MCP) allows an AI assistant such as Kiro, Codex, Claude, or another MCP-compatible agent to interact with external systems in a structured way. A useful mental model is: AI Ag...

Santanu Bhattacharya 4 days ago

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DEV Community · Technology

Offline_SOS_System

Pub.dev Package: Link GitHub Repository: Link Imagine getting into a serious car crash in a remote area—a mountain pass, a highway dead zone, or a rural road with zero cell signal. You open your safety app, or its automated background trigger fires... only to hang indefinitely because it relies on...

Koduru Annarao 4 days ago

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DEV Community · Technology

I checked my database logs and found a Senior Engineer stress-testing my AI 🕵️‍♂️

Hey everyone, Harun here again. I’m the 12-year-old solo dev from Anthiyur, India, building an AI coding mentor (KODA) entirely on my POCO C55 Android phone. Yesterday, I posted about getting my first 5 stranger users. But today, I did something every founder needs to do: I went on a Supabase Stake...

Harun - solo dev 4 days ago

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DEV Community · Technology

Brilliant work by Bhagya Prasad on DEV: a 100% offline, headless TFLite crash detection engine for Flutter. Zero latency, purely on-device Edge AI using raw sensor telemetry in RAM!! #Flutter

I was tired of SOS apps failing in dead zones, so I built a pure Dart, 100% offline TFLite crash detection engine. Bhagya Prasad Dannina...

Suseela Koduri 4 days ago

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DEV Community · Technology

Jesus Was Right. You Are God and Infinite.

Hey everyone 👋, I wrote in Christianity Makes Perfect Sense! about how some truths are deeply unfashionable, and how the discomfort a truth produces is often the surest sign that it is worth sitting with. This post is in that spirit. I want to talk about something that I have been turning over in...

Mahmoud Harmouch 4 days ago

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DEV Community · Technology

Rate Limits Cost Me a Whole Night of Work — Here's the 46-Line Script That Fixed It

Every heavy Claude Code user eventually hits the wall: the 5-hour rate limit block. I'm Lily. I lost my income overnight to a company-initiated layoff, rebuilt my setup starting that same month, and got back to ¥1.2M/month in revenue within six months. Why This Setup Works To most users...

Lily 4 days ago

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DEV Community · Technology

How I recorded my first product demo in 54 seconds (OBS, ffmpeg, openai.fm)

I shipped my first product demo video this week for Convertify (my free image converter). 54 seconds, no team, no budget. Here is the exact toolchain and what I would change next time. The stack OBS Studio for screen recording at 1920x1080, 60fps, CRF 20. The 60fps is not vanity...

Serhii Kalyna 4 days ago

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DEV Community · Technology

My First Github Project:From a Local Folder to GitHub Using Git and SSH

Introdction I always knew that GitHub is where developers keep and share their projects but I have always wondered how developers get the projects from their computers onto GitHub.When I started learning Git aeverything started falling into place. I recently worked on my first GitHub proj...

Mercy Siele 5 days ago

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DEV Community · Technology

Kubernetes Explained: Why Every Cloud & DevOps Engineer Should Learn It 🚀

Imagine you have one application running on a single server. Everything is fine. Then your users increase from 1,000 → 10,000 → 100,000. Suddenly, one server isn't enough. You need more servers. You need automatic scaling. You need load balancing. You need application recovery when something...

Yash Sonawane 5 days ago

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