DEV Community • 2026-04-25 21:22

Firestore Architecture For Scaling Read-Intensive Multi-Tenant Software

When you research how to build a multi-tenant SaaS on Firestore, most articles stop at one idea: put a tenantId field on every document. That's true, but it's the easy half. The more tricky question is how do you arrange your collections so that reads, writes, and costs stay within budget as the business scales. Background I was afraid of creating a system that was more trouble and exp...

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9m read
I open-sourced my SaaS starter — here's the part I didn't
DEV Community • 2026-04-25 21:22

I open-sourced my SaaS starter — here's the part I didn't

I've started the same SaaS project maybe a dozen times. Workspaces. Members. Roles. Billing webhooks. The "did this email actually verify or did Stripe fire the wrong event?" debugging session at 1am. Every time, the first two weeks of work were the same two weeks of work. So I built a starter kit. It's called Orbit, and the CLI to scaffold it is create-orb. Last month I open-sourced the core o...

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2m read
DEV Community • 2026-04-25 21:21

Build a disposable email alias CLI in 50 lines of Bash

I have a rule I keep breaking: never give a website my real email if I'm not sure I want a relationship with them. Five minutes later I'm on some forum, signup form open, and I'm typing me@gmail.com again because firing up a password manager, generating an alias, copying it, pasting it - it's just enough friction that I default to the lazy thing. So this weekend I built alias - a single shell com...

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5m read
DEV Community • 2026-04-25 21:18

Vue 3 Google Login (OAuth) – Quick Setup with vue3-google-login

Adding Google login in a Vue 3 app can quickly become messy with OAuth setup, SDK loading, and confusing docs. Instead of handling everything manually, we’ll use a lightweight npm package — vue3-google-login — to get Google authentication working in minutes. 👉 npm: https://www.npmjs.com/package/vue3-google-login ⚙️ Prerequisites You only need: A Google Client ID Get it from G...

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1m read
DEV Community • 2026-04-25 21:17

How I built 9 AI automation agents in Python to run my business 24/7

How I built 9 AI automation agents in Python to run my business 24/7 (full breakdown) Tags: python, ai, automation, productivity I'm a French freelance developer. Three months ago I was spending 4-5 hours per week on repetitive tasks: writing invoices, posting on LinkedIn, responding to basic support emails, monitoring competitors. Today, 9 Python agents do all of that automaticall...

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6m read
Hacker News: Front Page • 2026-04-25 21:11

The AI Industry Is Discovering That the Public Hates It

Article URL: https://newrepublic.com/article/209163/ai-industry-discovering-public-backlash Comments URL: https://news.ycombinator.com/item?id=47904568 Points: 18 # Comments: 2

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1m read
Taming MCPs, Skills, and Agent Chaos with ToolHive
DEV Community • 2026-04-25 21:01

Taming MCPs, Skills, and Agent Chaos with ToolHive

I use a lot of AI coding tools: OpenCode, Antigravity, Claude Code, Codex, Gemini CLI, Pi, Zed, GitHub Copilot, and probably others too. I'm having a ton of fun vibe coding and learning each of these systems. But ultimately, I need to understand these tools because my job is helping developers make sense of this stuff. I'm lucky to have a (reasonably) unlimited AI budget. But managing what feels ...

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2m read
DEV Community • 2026-04-25 20:58

Self-Improving Python Scripts with LLMs: My Journey

As a developer, I've always been fascinated by the idea of self-improving code. Recently, I've been experimenting with using Large Language Models (LLMs) to make my Python scripts more autonomous and efficient. In this article, I'll share my experience with integrating LLMs into my Python workflow and how it has revolutionized my development process. I'll provide a step-by-step guide on how to use...

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3m read
DEV Community • 2026-04-25 20:55

CodeGuard: Open Source AI Security Scanner for Developers and SecOps Teams

The Problem 95% of security breaches are caused by vulnerabilities that were already in the code. Not sophisticated zero-days. Not nation-state attacks. Just overlooked mistakes — SQL injection, hardcoded credentials, insecure API calls, weak input validation — sitting in codebases, waiting to be exploited. Most developers write code fast. Security reviews happen slow, if at all. Ente...

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2m read
DEV Community • 2026-04-25 20:53

I built a competitor pricing monitor in 3 days, here's how it actually works

I lost a deal last month. Prospect told me my competitor had dropped their pricing two weeks earlier. Found out during a live demo. Looked completely unprepared. Started looking for a tool to automate this. Found Visualping, alerts on every pixel change, completely noisy. Found enterprise tools at $500+/year. Nothing in between. So I built one. The stack Next.js 16 (App Route...

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2m read
The Journey from Scattered Data to an Apache Iceberg Lakehouse with Governed Agentic Analytics
DEV Community • 2026-04-25 20:53

The Journey from Scattered Data to an Apache Iceberg Lakehouse with Governed Agentic Analytics

The conventional wisdom for data platform modernization goes like this: pick a target system, build ETL pipelines for every source, migrate everything, validate the data, retrain your users, and then start getting value. That process takes six to eighteen months. During that time, analysts are waiting and leadership is asking why the investment has not produced results yet. There is a better se...

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6m read
DEV Community • 2026-04-25 20:52

Stop Learning Docker for Dummies. Learn It Like a DevOps Engineer

Most Docker tutorials teach you commands. Not how Docker actually works in real systems. That's why people can run docker run but freeze when asked to debug a broken container in production. This post walks you through them in order. Layer caching. Multi-stage builds. Networking. Volumes. ENTRYPOINT vs CMD. docker inspect. The concepts most DevOps engineers fake their way through until they get...

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11m read
DEV Community • 2026-04-25 20:52

Getting Customers to Trust an Agent That Acts on Their Behalf

Part 2 of 2 on agentic system adoption. Part 1 covered internal adoption: getting your own team to actually use the agent you built. In February 2024, Klarna announced that its AI assistant had handled 2.3 million customer conversations in its first month — two-thirds of all customer service chats, doing the work of 700 full-time agents, with resolution times down from 11 minutes to under 2. It w...

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8m read
DEV Community • 2026-04-25 20:50

I Built a Cron Job Monitoring API in a Weekend

Every developer has at least one cron job running somewhere — backups, data processing, sending reports. And every developer has had the experience of discovering a cron job stopped running days (or weeks) ago. The issue: cron doesn't notify you about failures by default. Your 0 2 * * * /opt/backup.sh could silently fail for a month before someone notices. The Solution I built CronPin...

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1m read
DEV Community • 2026-04-25 20:47

Why We Moved from GKE to EKS

Why We Moved from GKE to EKS When we initially adopted Kubernetes, Google Kubernetes Engine (GKE) Autopilot seemed like the perfect choice — fully managed, minimal operational overhead, and quick to get started. But as our workloads matured, three major challenges started to surface: Rising and unpredictable costs Compliance constraints The need for deeper infrastructure control Th...

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7m read
pmcli: local cli for managing those forgetful passwords
DEV Community • 2026-04-25 20:45

pmcli: local cli for managing those forgetful passwords

a Local CLI Password Manager in Python I have been working on a small local password manager called PMCLI. The goal is simple: store credentials locally, encrypt the saved passwords, and retrieve them from the terminal without printing secrets directly to the screen. GitHub repo: https://github.com/KimtVak8143/pmcli This is not meant to replace a production password manager...

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3m read
DEV Community • 2026-04-25 20:42

Dirty Data: How to Find It and What to Do

You loaded your data. You ran head(). Everything looks fine. It is not fine. The data that looks fine in head() hides its problems. The missing values are three thousand rows down. The duplicates are in the middle. The date column that looks like a date is actually a string and will break your model silently. The salary column has a value of negative forty thousand that nobody caught. Every rea...

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8m read
Hacker News • 2026-04-25 20:42

Show HN: Talisman – A Android instrument played with two thumbs

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1m read
DEV Community • 2026-04-25 20:24

Prototype Pollution: What Cursor's Object Merge Code Misses

TL;DR Cursor and Claude Code default to for...in object merge -- a CWE-1321 prototype pollution vector Root cause: AI training data skews toward pre-2019 StackOverflow answers that predate Object.hasOwn() One-line fix closes it entirely -- AI just never adds it unless you ask Last week I was reviewing a side project a friend asked me to look over. Node backend, built almost entirely...

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3m read
Hacker News: Front Page • 2026-04-25 20:17

Can you stop beans from making you gassy?

Article URL: https://www.seriouseats.com/how-to-reduce-bean-gas-tested-11883862 Comments URL: https://news.ycombinator.com/item?id=47904224 Points: 6 # Comments: 0

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1m read
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