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DEV Community · Technology

The NDC Revolution and What It Means for Data Engineers in Travel Tech

The NDC Revolution and What It Means for Data Engineers The airline industry is in the midst of its most significant distribution transformation in decades, and most data engineers working in travel tech are only beginning to grasp the magnitude of the shift. IATA's New Distribution Capab...

Martin Tuncaydin 1 day ago

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DEV Community · Technology

Nginx Reverse Proxy: Complete Configuration Guide

Nginx Reverse Proxy: Your Gateway to Scalable and Secure Applications Ever wondered how popular websites handle massive traffic or serve multiple applications from a single server? This guide will walk you through setting up an Nginx reverse proxy, a powerful tool that acts as an intermed...

Big Mazzy 1 day ago

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DEV Community · Technology

How to Build an AI Sales Assistant Using n8n and GPT (Step-by-Step Guide)

Most “AI sales assistants” don’t actually sell. They respond. They chat. They look impressive in demos. But when it comes to real sales? Leads still go cold Follow-ups still get missed Conversions don’t improve That’s because most setups are just chatbots, not systems. In this guide, you’ll lea...

Ciphernutz 1 day ago

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DEV Community · Technology

gRPC in Go: real-time streaming for microservices

Three internal Go services need real-time crypto prices. The first implementation: REST polling against a homemade aggregator, every second. Result: 3 services × 60 req/min = 180 requests per minute for data that changes every 200 ms. Latency anywhere from 500 ms to 1 s depending on where you land i...

Odilon HUGONNOT 1 day ago

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DEV Community · Technology

Building a Privacy-First URL Shortener on Blockchain

Why Traditional URL Shorteners Are a Privacy Nightmare When you click a bit.ly link, here's what happens: Bit.ly logs your IP, timestamp, user agent They see the destination URL They track your browsing patterns They sell this data to advertisers Even if you trust the shortener, their...

Wes Parsons 1 day ago

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DEV Community · Technology

3 Ways to Configure Resources in Terraform

Infrastructure as Code has changed how engineers manage cloud infrastructure. Instead of manually creating resources in the cloud console, we can define everything in code and let tools handle the provisioning. Terraform is one of the most popular tools for this purpose. When working with Terrafor...

Ijay 1 day ago

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DEV Community · Technology

I'm a Final-Year CS Student — And I'm Done Letting AI Tools Own My Data

There's a particular kind of restlessness that comes from being a CS student in 2026. It's not the assignments, or the deadlines, or even the exams. It's the feeling that by the time you've shipped something, the landscape has already shifted. Every week there's a new model, a new tool, a new framew...

Nirbhay Gautam 1 day ago

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DEV Community · Technology

FastAPI With LangChain and MongoDB

This article was written by Carlos Barboza. I'm happy to welcome you to this tutorial! This demonstration provides a fully functional example of integrating FastAPI, LangChain, and MongoDB, and I'm eager to share it with all technology enthusiasts. The value of this guide is that it provides a wor...

MongoDB Guests 1 day ago

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DEV Community · Technology

Day 5: I Almost Over-Engineered Everything

At this point, GraceSoft Core was starting to take shape. Architecture. Patterns. Principles. Everything felt… solid. And then I caught myself. I was about to over-engineer the whole thing. ⚖️ The Tension There’s always this trade-off: Build it right vs Build it fast...

GraceSoft 1 day ago

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DEV Community · Technology

[Patterns] AI Agent Error Handling That Actually Works

Most AI agent tutorials show the happy path. Your agent calls an LLM, gets a response, does the thing. Ship it. Then production happens. Rate limits. Timeouts. Malformed responses. Context window overflows. Your agent goes from "demo-ready" to "incident-generating" in about 48 hours. I run a small...

Tijo Gaucher 1 day ago

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DEV Community · Technology

SambaNova: GPU-Free AI Inference at 5x Speed — AI University Update (78 Providers)

SambaNova: GPU-Free AI Inference — AI University Update (78 Providers) I've added SambaNova to the AI University, bringing the total to 78 providers. SambaNova is building AI inference chips that don't rely on NVIDIA GPUs — a significant shift in AI infrastructure. What is Sa...

kanta13jp1 1 day ago

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DEV Community · Technology

Substrate AI Is Hiring Harness Engineers!

Engineering the Future of AI Orchestration: A Deep Dive into the Harness Engineer Role at Substrate AI Substrate AI, a company at the forefront of developing a decentralized AI computation network, is actively seeking Harness Engineers. This role is pivotal, demanding a deep understanding...

Mariano Gobea Alcoba 1 day ago

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DEV Community · Technology

Visual Testing FAQ: Answers to the 20 Most Common Questions

Visual Testing FAQ: Answers to the 20 Most Common Questions Have questions about automated visual testing? Here are the answers to the questions we receive most often, organized by topic. General Questions 1. What is automated visual testing? Automated visual testin...

Delta-QA 1 day ago

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DEV Community · Technology

How to Monitor Your VPS with n8n Health Check Workflows

What You'll Need n8n Cloud or self-hosted n8n Hetzner VPS or Contabo VPS for hosting Basic command-line knowledge A monitoring dashboard tool (optional but recommended) Table of Contents Why VPS Health Monitoring Matters Setting Up Your First Health Check Workflow Moni...

Raizan 1 day ago

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DEV Community · Technology

How I Built a Lead Gen Machine That Finds My Clients on Upwork

Two of my current clients came from the same system: a Python scraper that monitors Upwork every 20 minutes, scores each job with AI, and sends me a Telegram alert when something scores above a 6. I didn't find them. The system did. This is how it works. The problem Upwork's search is f...

Ben Utting 1 day ago

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DEV Community · Technology

How to Test Cross-Border Payments in 7 Steps

If you are building a product that moves money across borders, you already know that you need to use different testing procedures than you would for a domestic payment gateway. Cross-border payment processing introduces FX volatility, multi-day settlement workflows, and compliance layers that make w...

Demola Malomo 1 day ago

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DEV Community · Technology

Attended Spring I/O 2026

Spring I/O 2026 I have never attended Spring I/O before and it was my first time ever that I had attended it. It was also my first time here in Europe or Spain. Barcelona is incredibly beautiful. I really loved how walkable the city is. I spent 6-7 hours on the day before just walking aro...

Huiren Woo 1 day ago

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DEV Community · Technology

내 AI 코딩 연말결산을 직접 만들었다 — Memradar Code Report

앱은 memradar.vercel.app에서, 코드는 GitHub에 있다. 더 많은 글은 radarlog.kr에서. 매년 연말이 되면 Cursor가 "올해 너는 몇 시간 코딩했고, 어떤 언어를 얼마나 썼고" 하는 회고를 띄운다. GitHub도 Year in Review를 낸다. Discord도 프로필에 연간 통계가 뜬다. 숫자는 내 것인데, 페이지를 넘기다 보면 "아 나...

김이더 1 day ago

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DEV Community · Technology

I Built My Own Year-End Review for AI Coding — Memradar Code Report

Live app at memradar.vercel.app. Code on GitHub. More posts at radarlog.kr. Every December Cursor pops up with something like "you coded X hours this year, across these languages." GitHub drops Year in Review. Discord puts yearly stats on your profile. The numbers are all mine, but flipping thro...

김이더 1 day ago

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DEV Community · Technology

Why We Ripped Function Overloading Out of Our AI Toolchain

The history of programming languages is a timeline of offloading cognitive weight. Assembly abstracted the registers. Python abstracted the memory management. Throwing generative AI at a complex, feature-heavy language reverses this progress. The syntax itself gives the machine too much room to impr...

Codigger 1 day ago

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DEV Community · Technology

Testing AI-Generated Code: How to Actually Know If It Works

I shipped a bug to production in January that embarrassed me. Not a subtle bug. A bug where a rate limiting function the AI wrote silently swallowed errors and returned true for every request, which meant our rate limiter was not actually rate limiting anything. The function looked fine on a visual...

Alex Cloudstar 1 day ago

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DEV Community · Technology

SaaS Churn Is Killing Your Business. Here Is What to Do About It (Without a Support Team)

I knew something was wrong with my first SaaS product when I checked the dashboard one morning and found a dozen new sign-ups alongside a dozen cancellations. The sign-ups felt great. The cancellations felt like getting kicked in the stomach. What I did not understand at the time was the math. I wa...

Alex Cloudstar 1 day ago

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DEV Community · Technology

I Tried to Create GPT With Pure Math and No Training — Here's Where It Broke | Shivnath Tathe

The Question What if we skipped training entirely? Every language model — GPT, LLaMA, BERT — learns by optimising a loss function over millions of gradient steps. But the underlying data is just text: words appearing near other words. Co-occurrence. Counting. So I asked: how far can pur...

Shivnath Tathe 1 day ago

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I built 3 MCP servers so I can ask Claude about my DevOps stack

Every time something looked off in production, I'd switch between 4 tabs: Prometheus → check metrics, kubectl → check pods, Grafana → check dashboards, terminal → check logs. So I built MCP DevOps Pack — 3 MCP servers that let Claude Desktop talk to your infra directly. ## What's included | Pac...

Jedsadakorn Suma 1 day ago

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