DEV Community • 2026-08-22 09:01

Technical SEO Checks I Run Before Writing More Content

“We need more content” is one of the most common conclusions in SEO. Sometimes it is right. Often it arrives too early. If search engines cannot reliably crawl, understand or index the pages already on a site, another twenty articles just create a larger pile of URLs with the same problem. Before planning content, I run a technical pass in a fixed order. It is not glamorous, but it stops expens...

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5m read
Flavio Copes • 2026-08-22 09:00

How to group array items with Object.groupBy()

Group an array by a property with Object.groupBy() instead of a reduce loop. See a realistic expense example and Map.groupBy() for object keys.

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1m read
DEV Community • 2026-08-22 08:58

I used JSON files instead of a database for 1,699 records. Here's what actually broke.

Three years ago I'd have called this a bad idea. I still might. But I've been running ryzenstudy.com on flat JSON files for months now — 1,699 exam paper records, 699 distinct subject codes, five academic programmes, zero database servers — and the failures haven't been the ones anyone warned me about. Nobody warned me about slugs. The setup It's a Next.js 15 app on App Router, one VPS, PM2 in ...

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8m read
DEV Community • 2026-08-22 08:49

Agentic AI That Survives the Enterprise, Part 5: Humans in the Loop Without Burning Out Humans

Part 1 ended with a confession: you'll never test your way to 100% correctness. For critical workflows the final safety net is a human. But "human in the loop" has a dirty secret. Badly designed, it's theater. The rubber-stamp problem Route every agent action to a human for approval and watch what happens. Week one, careful reviews. By week three approval fatigue sets in and people cli...

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2m read
DEV Community • 2026-08-22 08:48

Agentic AI That Survives the Enterprise, Part 4: Boring Engineering Wins

The first three parts covered thesis, cost, and security. This one covers everything that separates a demo from a production system. None of it is exciting. All of it is why some teams sleep at night. The production checklist Trace everything. Langfuse, LangSmith, or OpenTelemetry; pick one and stick with it. When (not if) a workflow misbehaves in production, traces are the difference ...

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DEV Community • 2026-08-22 08:48

What Coding Agents Say When They Talk to Each Other

An observational study on a five-day corpus — 179 messages between parallel coding sessions — followed by an experiment built from what the corpus said. Every message was coded twice by independent coders, and disagreements are reported rather than resolved in my favour. One machine, one person, one set of repositories: the ceiling is coverage, not confidence. Claude Code sessions can now messa...

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16m read
DEV Community • 2026-08-22 08:48

Agentic AI That Survives the Enterprise, Part 3: The Agent With Credentials

Parts 1 and 2 covered reliability and cost. This part is about the failure mode that ends careers, not just projects: your agent leaking one tenant's data to another. Here's what changes when you give an LLM access to tools and data. Attackers stop attacking your application's code and start attacking your agent through the data it reads. A poisoned invoice, a malicious resume, a crafted support ...

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DEV Community • 2026-08-22 08:48

Agentic AI That Survives the Enterprise, Part 2: You Are Overbuying Intelligence

Part 1 argued that most enterprise agent failures are architecture failures. This part covers their favorite architecture mistake: paying frontier prices for work a cheaper model does just as well. Teams default to the biggest model because it feels safe. Then they run it billions of times on tasks like extracting a date from an email, and wonder why the AI line item looks like payroll. ...

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DEV Community • 2026-08-22 08:47

Agentic AI That Survives the Enterprise, Part 1: Probabilistic Engines, Deterministic Businesses

Enterprises run on workflows that must be auditable, explainable, predictable, and correct. A single arithmetic error is not a quirk. It's a financial loss. Access control, data privacy, and robustness aren't features either. They're the price of admission. LLMs are the opposite kind of machine: probabilistic, open-ended, general-purpose brains. Brilliant at ambiguity, terrible at guarantees. Pu...

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DEV Community • 2026-08-22 08:45

OpenAI Cuts GPT-5.6 Luna and Terra Costs, Reshaping API Budget Planning

OpenAI has reduced usage costs for two GPT-5.6 model variants, cutting GPT-5.6 Luna pricing by about 80% and GPT-5.6 Terra pricing by about 20%. The changes apply to API usage and to the way credits are consumed in ChatGPT Work and Codex. At the same time, OpenAI introduced a Fast mode for GPT-5.6 Sol that can process work up to 2.5 times faster at roughly twice the price, while Sol's standard pri...

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DEV Community • 2026-08-22 08:42

I built a TikTok-style shopping feed with a recommender system — in pure client-side JS

TL;DR: I built ThodaSa — a reels-style impulse-shopping demo for the Indian market. You scroll products like Instagram reels, and the feed learns your taste — with no backend, no login, and no tracking servers. The whole recommender is ~150 lines of client-side JavaScript. Code is on GitHub. The idea Quick-commerce apps in India (Blinkit, Zepto, Meesho) figured out something interestin...

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3m read
DEV Community • 2026-08-22 08:37

# MY FIRST GITHUB PROJECT: FROM A LOCAL FOLDER TO GITHUB USING GIT AND SSH.

What is git and github Git is a command line tool used to create project folders and files that can be linked to your github account repositories. Github is a website where you put all your projects folders and files to enable collaboration with you team or anyone who can contribute to that project. Repository is a project folder that contains all of your project files. Creatin...

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2m read
DEV Community • 2026-08-22 08:23

Cura doesn't have connector generation. I built a plugin, and a one-click installer, that does.

OrcaSlicer and PrusaSlicer both let you generate mechanical connectors, plugs, dowels, snaps, dovetails, when you split a model for multi-part printing. Cura doesn't, and it doesn't expose an official plugin API you can hook into to add this the right way either. That gap is why cura-connect exists. How I built it Two phases, verified at each step rather than assumed to work: Phase 1...

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DEV Community • 2026-08-22 08:23

Sharing memory between processes with java.lang.foreign and jextract

Java Foreign Function and Memory API (java.lang.foreign) is a powerful tool that you can use to take advantage of various OS-specific optimizations. Often though, due to high usage of the C/C++ preprocessor and its powerful macros it can be cumbersome to write and maintain the Java-side code. Help is available in the form of jextract - a JDK tool that reads C/C++ header files (*.h) and gen...

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20m read
DEV Community • 2026-08-22 08:22

Build a TikTok Hashtag and Creator Research Pipeline in Node.js

A useful trend-research workflow rarely ends with a hashtag count. You usually need to move from a hashtag to recent public videos, then to the creators behind those videos—without silently accepting duplicate pages or anti-bot responses as real data. This tutorial builds that workflow with four read-only endpoints: /v1/hashtag/info /v1/hashtag/videos /v1/users/info /v1/videos The examples us...

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4m read
DEV Community • 2026-08-22 08:21

OpenWA: A Self-Hosted WhatsApp API Gateway Built for Production

OpenWA: A Self-Hosted WhatsApp API Gateway Built for Production WhatsApp's official API is powerful, but it comes with strings attached: vendor lock-in, per-message pricing, and a closed ecosystem. For developers who want full control over their messaging infrastructure, the alternatives have historically been thin. OpenWA aims to change that. It's a free, open-source, self-hosted Whats...

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4m read
DEV Community • 2026-08-22 08:20

[Aug 17-22] We Swapped GPUs, Then Kept Finding Blind Spots in Our Own Checks

A hardware verdict flipped twice in one week, two verification tools turned out to be quietly missing errors, and a real brokerage account needed two manual human interventions This is the English version of a post originally written in Korean for my algorithmic trading system devlog(new tab). It's been a while since the last devlog, and it turned out to be the busiest week yet. We swapped the G...

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4m read
DEV Community • 2026-08-22 08:20

[260817~0822] 그래픽카드를 바꾼 뒤, 검증 도구들의 허점을 연달아 잡았다

하드웨어 교체 판정이 한 주 동안 두 번 뒤집혔고, 자동 검증 도구 두 개가 조용히 오류를 놓치고 있었다는 게 드러났고, 실계좌에서는 사람이 두 번 직접 개입해야 했습니다 지난 개발일지 이후로 조금 뜸했는데, 그 사이가 오히려 가장 바빴던 한 주였습니다. 월요일엔 그래픽카드를 통째로 바꿨고, 그 판정이 며칠 사이 두 번 뒤집혔습니다. 같은 주에 새로 만든 검증 도구 두 개가 그동안 못 보고 지나치던 문제들을 잇달아 드러냈습니다. 그리고 실계좌에서는 사람이 두 번 직접 개입해야 하는 일이 있었습니다. 그래픽카드를 바꾸고, 판정이 두 번 뒤집혔다 월요일에 그래픽카드를 다른 브랜드 제품으로 교체했습니다. 계산 방식도 함께 바뀌는 큰 작업이었습니다. 화요일에 새 설정으로 정식 배포했는데,...

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DEV Community • 2026-08-22 08:17

Stop Guessing Which Model Is Better: Amazon Bedrock Model Evaluation Hands-On

"Which model should we use?" is the most common question in every Bedrock project — and most teams answer it by eyeballing a few responses. That doesn't scale, it isn't reproducible, and it silently expires every time a new model version ships. In this hands-on, we'll answer the question with data: Amazon Bedrock Model Evaluation, run in two modes — automatic metrics scored against reference answ...

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5m read
DEV Community • 2026-08-22 08:17

Checking whether an npm package "exists" stopped working

Every npm supply chain postmortem ends with the same advice: verify the package before you install it. So I looked at what the tools that do this actually check. Most of them check whether the package exists. That check is dead. Here are three package names documented as AI hallucinations, against the npm registry right now: react-codeshift HTTP 200 react-fetch-hook HTTP 200 unused-imports...

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