Morning.dev

DEV Community • 2026-08-20 08:37

How Spamhaus blocklisted my SMTP verifier — a server that never sent an email

In short: I'm building an email verification service that works via live SMTP probing. One day iCloud started rejecting my server with 550 ... rejected due to listing in Spamhaus — even though my server had never sent a single email. What follows is an investigation with a wrong hypothesis, a humbling config discovery, a bureaucratic ticket rejection, and an unexpectedly happy ending. With lessons...

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7m read

DEV Community • 2026-08-20 08:30

I shipped a plugin with one branch I hadn't tested — so I built a fallback

I wrote the Obsidian plugin with Claude Code: it typed the code; the rules, reviews, and decisions were mine. I led, argued with it, redid things, and submitted the plugin for review myself. I'm not an engineer. My job is getting people to actually use our product. The plugin itself is simple: one main.js, 557 lines, zero dependencies, Obsidian API only. It takes the note you have open and sends ...

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7m read

DEV Community • 2026-08-20 08:28

Windows Brings Out the Rorschach Test in Everyone: Why Your OS Opinion Says More About You Than Microsoft

Windows Brings Out the Rorschach Test in Everyone: Why Your OS Opinion Says More About You Than Microsoft In 2026, a seemingly innocuous Hacker News thread about Windows updates spiraled into thousands of comments—some praising the OS's stability, others condemning its bloat, a few waxing nostalgic about Windows 7, and a vocal minority arguing that Linux had already won. The pattern was...

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7m read

DEV Community • 2026-08-20 08:27

BlazorMemory 1.0 is out. Ten months, 14 packages, and what I got wrong along the way.

I started BlazorMemory in January because I wanted an AI chat assistant in Blazor that remembered things. I looked for a .NET library that did this. There wasn't one. Everything in the space was Python, and everything assumed you had a server and a vector database. Blazor WASM has neither. So I built it. v1.0.0 shipped this week. Here is what is in it, and more usefully, what I would do differen...

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3m read

I cut small AWS charges by picturing them at 100x scale

DEV Community • 2026-08-20 08:27

I cut small AWS charges by picturing them at 100x scale

In June 2026, I started reviewing my AWS bill. The goal was not to shave a few dollars off this month. Even a charge that is only a few dollars today becomes a heavy fixed cost once usage grows 100x. So I pictured that "future amount" first, fixed things while the systems kept running, and shaped the infrastructure to fit. This is the measured record of that work. The first thing I learned: the t...

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10m read

Product Hunt — The best new products, every day • 2026-08-20 08:24

fx (by Vercel)

Vercel's tiny, open-source coding agent Discussion | Link

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1m read

DEV Community • 2026-08-20 08:23

Stop Stuffing Your Context Window: 6 Architectural Shifts to Cut Token Costs and Latency

Over the last year, large language models shifted from experimental prototypes to core backend infrastructure. As feature sets expand, an anti-pattern emerges across engineering teams: solving every product requirement by shoving more raw context into the prompt. While building real-time, data-intensive features for Fanziz spanning personalized news feeds, semantic search, and dynamic live commen...

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4m read

DEV Community • 2026-08-20 08:21

agent-builders-stable-tools

Give Your AI Agent a Stable Tool Instead of a Steering Wheel The 2026 default for "AI + web" is agentic browsing: give the model a browser, let it look-click-wait-extract per task. Watching it work feels like the future. Putting it in production teaches you its actual economics: every run re-perceives the same pages, every run pays tokens per page-turn, every run is a fresh roll of the ...

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3m read

Hacker News: Front Page • 2026-08-20 08:20

Don't Paste the AI, please

Article URL: https://dontpastetheai.com/ Comments URL: https://news.ycombinator.com/item?id=49371857 Points: 19 # Comments: 9

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1m read

DEV Community • 2026-08-20 08:20

The Boundary Independence Principle (BIP)

I've been writing about the SOLID principles for over a decade. I built InversifyJS because of them, I wrote about implementing them with the onion architecture, and just recently I argued that they are universal design principles that appear far beyond object-oriented programming. Yet something has always felt missing, not from the principles themselves, but from the conversation around them. SO...

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11m read

DEV Community • 2026-08-20 08:20

One repo, ten Next.js sites: the commit that published ten blog posts this morning

The commit that landed at 10:29 this morning was 30 files and 1,240 insertions. Ten blog posts, ten hero images, ten content calendars ticked one row forward. One commit, ten different websites, ten different audiences, none of which have anything to do with each other. That commit is the clearest picture I can give of what I have actually been building this year, so I want to walk through it pro...

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5m read

DEV Community • 2026-08-20 08:18

Claude Code Context Usage: Diagnose Unnecessary Tokens

Claude Code Context Usage: Diagnose Unnecessary Tokens In the Claude Code community, a user reported that a fresh session started at roughly 35,000 tokens and later dropped to about 13,000 after cleaning up repository instructions. That is a useful reminder to inspect your own project setup, but not a universal benchmark: codebase size, instruction length, MCP tools, and measurement met...

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4m read

DEV Community • 2026-08-20 08:10

Production-Grade CI/CD for Databricks: The Gatekeeping Strategy Real Teams Use

A "push code → deploy" pipeline is a demo, not a production strategy. What separates a toy CI/CD setup from one that survives a real data platform is the gates — the checkpoints that stop bad code, bad data, and bad permissions from ever reaching production. This post covers the actual strategy mature Databricks teams run, with full implementation using Asset Bundles, GitHub Actions, and a Service...

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10m read

Opera News • 2026-08-20 08:00

Opera GX Teams Up with Overwatch for World Cup Giveaway

Excited for the Overwatch World Cup? Ready to watch your favorite heroes battle it out across the world in a weekslong battle for ultimate supremacy? Well, so are we! That’s why we’ve teamed up with Overwatch on a custom Esports Hub, new mods, and 21 rewards redeemable only through Opera GX. So let’s dig into […]

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1m read

DEV Community • 2026-08-20 07:57

Understanding Longest Common Prefix with a Simple Approach

Hello everyone! 👋 Let's solve the longest common prefix Before solving the problem. we should understand it first. There are multiple ways to solve this problem. Some approaches are : Vertical Scanning Trie-based approach Horizontal scanning Divide and conquer For this problem, I will use the vertical Scanning approach because it is easier to understand and implement. What is ver...

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3m read

AI Founder Zirong Chi on What Makes an Idea Worth Building

HackerNoon • 2026-08-20 07:53

AI Founder Zirong Chi on What Makes an Idea Worth Building

NxCode founder Vivian Chi discusses AI entrepreneurship, product judgment and what separates a promising hackathon demo from a lasting product.

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1m read

Lobsters • 2026-08-20 07:53

What Zig felt like, coming from Rust

Comments

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1m read

HackerNoon • 2026-08-20 07:52

Your Law Firm's Biggest Risk Might Be Your AI Tools

Law firms are adopting AI fast, but hallucinated citations, data exposure, and weak oversight create serious risks. Here’s how firms can use AI safely.

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1m read

Designing Agent Memory: Five Gates a Bigger Context Window Cannot Replace

HackerNoon • 2026-08-20 07:48

Designing Agent Memory: Five Gates a Bigger Context Window Cannot Replace

A million-token window enlarges the warehouse. Reliable agents still need the gates that decide what to store, retrieve, revise and forget.

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1m read

Newest questions tagged javascript - Stack Overflow • 2026-08-20 07:47

Hono app not deploying to vercel: Can't read properties of undefined (reading 'readfile')

I am working on an e-commerce backend using hono. I used npm create hono@latest to scaffold the app, changed nothing. When using vc deploy, it shows the error: Can't read properties of undefined (reading 'readfile') How can I solve this?

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1m read