DEV Community • 2026-04-17 11:47

The 2026 Developer Manifesto: Mastering the AI-Native and RSC Stack

A few weeks ago, I shared how I built my 0ms latency developer workbench, FmtDev, using pure Next.js 15 SSG (without a single database query). But as I started building the next wave of tools for 2026, I realized the game has completely changed. We aren't just dealing with JSON and Base64 anymore; we are dealing with the intersection of Agentic LLMs and React Server Components. Here is my manifest...

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Product Hunt — The best new products, every day • 2026-04-17 11:44

CapyPlan

Your no stress chearleader for tiny tasks Discussion | Link

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DEV Community • 2026-04-17 11:42

I Dumped Linux's Entire Git History Into a Database — and What I Found Felt Like Archaeology

I made a mistake that took me years to recognize as a mistake: I treated git history as something you scroll through when something breaks, then close. I'm not saying this to beat myself up. I'm saying it because most devs do exactly the same thing. And when you finally treat it as data — as rows in a table you can query, filter, aggregate — you end up looking at your own work like it belongs to ...

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11m read
DEV Community • 2026-04-17 11:41

Understanding Middleware Pipeline in ASP.NET Core (Simple Explanation)

While working with ASP.NET Core, one important concept I learned is the middleware pipeline. Middleware is a series of components that process every HTTP request and response in an application. Each request passes through multiple middleware components before reaching the controller, and the response goes back through the same pipeline. Common middleware examples include: Authentication middl...

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DEV Community • 2026-04-17 11:41

Project Glasswing: What AI Doesn't Tell You When It Writes Your Code

A local corner store won't let you into the back room. Doesn't matter how much you trust the owner — some things aren't for everyone. The stock, the suppliers, the real prices. There's a line between what's on display and what actually keeps the business running. Software supply chain is exactly that back room. And for years we've treated it like the storefront. Open, well-lit, welcoming. Trustin...

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DEV Community • 2026-04-17 11:40

MegaTrain: Training 100B+ Parameter LLMs on a Single GPU (And Why I Had to Close My Laptop)

I was processing the Scion paper at 11pm — already wrote about it here — when my feed serves me a title I had to read twice: "MegaTrain: Full Precision Training of LLMs with 100B+ Parameters on a Single GPU". First reaction: obvious clickbait. Second reaction: academic clickbait, which is worse because it comes with an abstract and everything. Third reaction, after the first three paragraphs of t...

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DEV Community • 2026-04-17 11:40

Open Source Stars Are Not Revenue, You Need a Commercial Bridge

Open source companies are rich in attention and poor in monetization. The repo grows. Stars go up. Contributors show up. The community gets louder. Everyone feels like momentum is real, and in one sense, it is. But if that attention never crosses the bridge into paid value, the business can stay strangely fragile for a long time. I think this is one of the most common GTM blind spots in open ...

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DEV Community • 2026-04-17 11:40

Scion: The Agent Orchestration Testbed Google Just Open-Sourced

I was reading through the repo diff when I realized I'd been at it for 40 minutes without looking up. Not because the code itself was mind-blowing — but because I was seeing the same architecture from two completely different angles in the same week, and something just clicked. Last week I wrote about Freestyle: sandboxes so coding agents can execute stuff without torching your machine. This week...

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DEV Community • 2026-04-17 11:39

Your Accessibility Score Is Lying to Your Face

Why do we keep treating accessibility like it's an exam you pass? We've spent years building tools that measure what they can measure automatically, and meanwhile we assume that's good enough. Something is fundamentally broken in how this industry thinks about this. Three weeks ago I ran Lighthouse and axe-core against juanchi.dev. 98/100. Green. Beautiful. I felt good about myself for exactly fo...

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DEV Community • 2026-04-17 11:39

Never Type openssl x509 -text -noout Again: I Built a VS Code Extension for SSL/TLS Certificates

It was 11 PM, there was a production incident, and I had three terminals open trying to remember whether it was openssl x509 -text -noout -in cert.pem or openssl pkcs12 -info -in keystore.p12 -noout. The server was throwing TLS handshake failed and I needed to confirm in two seconds whether the certificate we'd deployed was the right one or if someone had accidentally pushed the staging cert. Tha...

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9m read
DEV Community • 2026-04-17 11:38

I Got Tired of Waiting for Someone to Maintain the HAProxy VS Code Extension — So I Built It Myself

There's a specific moment when you realize you waited too long. For me it was a Tuesday at 11pm — three VS Code windows open, HAProxy 2.8 running in Docker, and a validation error I couldn't figure out for the life of me. I open the syntax highlighting extension I had installed — the only one that existed in the marketplace — and the last commit was from 2019. Five years without a single change....

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9m read
DEV Community • 2026-04-17 11:37

How Linux Executes a Binary: I Finally Understood It at 33 Years In

There are exactly 127 syscalls that an empty Node.js process makes before executing a single line of your code. One hundred and twenty-seven. When I measured it with strace last week, I had to read the output twice, then close the terminal and go for a walk. I have 33 years of history with computers. I started on an Amiga at age 5, went through DOS, was running Linux servers at 18, and today I'm ...

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Lobsters • 2026-04-17 11:37

What are you doing this weekend?

Feel free to tell what you plan on doing this weekend and even ask for help or feedback. Please keep in mind it’s more than OK to do nothing at all too!

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DEV Community • 2026-04-17 11:32

How I Built juanchi.dev on the Most Bleeding-Edge Stack of 2025: Next.js 16, React 19, Tailwind v4 & Railway

For months before I started juanchi.dev, I kept asking myself the same question: do I go with the proven stack, or do I dive headfirst into the newest stuff and just take the hits? I chose the hits. I always choose the hits. This is what happened when I tried to ship a developer portfolio with Next.js 16, React 19, Tailwind v4, and Railway to production — with everything that went wrong document...

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7m read
DEV Community • 2026-04-17 11:32

Next.js App Router: The Guide I Wish I Had When I Migrated from Pages Router

Next.js App Router: The Guide I Wish I Had When I Migrated from Pages Router It was a Tuesday at 11pm and I had a client's shopping cart broken in production. The problem: I'd migrated to App Router by following the official docs like an IKEA manual — methodically, with blind faith — and completely forgot to understand why things worked the way they did. When something broke, I had no i...

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DEV Community • 2026-04-17 11:31

From DOS to Cloud: My 33-Year Journey with Tech — From an Amiga in 1994 to Deploying on Railway with Next.js

There's a photo of me from 1994 that my mom keeps in a green plastic album. I'm three years old, bowl cut, sitting in front of an Amiga 500 with an expression of absolute concentration. I have no idea what I was looking at. Probably some game on a floppy my dad had copied from god knows where. But that image is my origin story. The personal big bang of this Argentine programmer's journey — one tha...

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DEV Community • 2026-04-17 11:31

Docker for Node.js Developers: From Zero to Production Without Losing Your Mind

The first time Docker took down my production server It was 2021. I had a Node.js app running on a DigitalOcean VPS, working perfectly on my machine (yes, that phrase), and I decided to "modernize" the deployment by throwing Docker at it. The result: three hours of downtime, one furious client, and me at 3 AM reading logs I didn't understand. Today, with all that pain converted into ha...

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DEV Community • 2026-04-17 11:30

Canadian NI 31-103 for solo crypto-quant devs: what you can and can't build without registration

Canadian NI 31-103 for solo crypto-quant devs: what you can and can't build without registration Not legal advice. I'm a builder, not a lawyer. What follows is the regulatory map I built for myself after reading National Instrument 31-103 end-to-end, talking to three Canadian securities lawyers (one paid, two acquaintance coffees), and shipping a signal product in public. If any of this...

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DEV Community • 2026-04-17 11:30

Databases Are Not Becoming Chatbots

Over the last two months, while building a database tool and adding AI features to it, I started realizing that I was not just shipping product work. I was bumping into a larger question: what happens to databases when software no longer just reads and writes records, but also interprets schema, suggests queries, explains plans, preserves context, and collaborates with language models? My current...

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How I Built a Fluent PDF Library and Visual Drag-and-Drop Builder for PHP
DEV Community • 2026-04-17 11:26

How I Built a Fluent PDF Library and Visual Drag-and-Drop Builder for PHP

After years of struggling with PDF generation in PHP, I finally decided to do something about it. I was tired of losing time manually adjusting coordinates, dealing with heavy and inflexible libraries, and writing code that was difficult to maintain and modify later. So I built arabel-pdf — a modern, lightweight PDF library — and its companion Arabel PDF Builder, a visual drag-and-drop tool that...

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