DEV Community • 2026-04-28 09:30

Two Nasty Gotchas When Building Multi-Agent Systems with Google ADK

Google's Agent Development Kit (ADK) makes it straightforward to compose LlmAgent instances into multi-agent hierarchies. But two bugs bit me hard in production that aren't documented anywhere. Here's what happened and how to fix them. The Setup A root router LlmAgent with two sub-agents. Both sub-agents are module-level singletons — instantiated at import time, referenced from the roo...

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3m read
Why I built Heym instead of extending n8n
DEV Community • 2026-04-28 09:30

Why I built Heym instead of extending n8n

I've been building AI workflows for a while. And for a while, n8n was the right tool for the job. Then the workflows started getting more complex. Not in terms of the number of steps, but in terms of what the steps needed to do. Agents that reason and call tools. Document retrieval wired directly into the execution flow. Approval checkpoints before anything consequential happens. Full observabil...

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3m read
DEV Community • 2026-04-28 09:29

🦊GoClaw Deep Dive 🤖 — A Builder's Guide to a Multi-Tenant AI Agent Platform 📘

Source: https://github.com/nextlevelbuilder/goclaw — a Go-based, multi-tenant AI agent gateway with 20+ LLM providers, 7 messaging channels, an 8-stage pipeline, 3-tier memory, and 5-layer security. This document distills GoClaw's architecture into the principles, patterns, and concrete building blocks you need to build a similar platform from scratch. Read top-to-bottom for theory, jump to Par...

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31m read
DEV Community • 2026-04-28 09:29

Full Analysis of AI Agent Security Tools: Onecli, Sigcli, Agent Vault, Ren AI Proxy, and FakeKey

Full Analysis of AI Agent Security Tools: Onecli, Sigcli, Agent Vault, Ren AI Proxy, and FakeKey Background: An Emerging Security Need The rise of AI agents and coding assistants (such as Claude Code, Cursor) is bringing brand‑new security challenges to developers. Your project directory may quietly contain a .env file storing various API keys for OpenAI, Anthropic, Alibaba C...

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5m read
DEV Community • 2026-04-28 09:25

'I don't know' — The invisible crisis

This is the thirteenth post in my autism awareness month series. When someone asks me what I want to eat, or which color I prefer, or what I should work on next, something happens at times that's hard to describe to people who don't experience it. From the outside, my response might look like indifference. I might say "I don't know" and smile quietly. To the person asking, this can read as not c...

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3m read
15 Data Integration Tools Worth Knowing in 2026 — An Engineer's Honest Take
DEV Community • 2026-04-28 09:23

15 Data Integration Tools Worth Knowing in 2026 — An Engineer's Honest Take

There's a particular kind of technical debt that only shows up at the worst possible moment — and bad integration tooling is near the top of that list. You don't feel it when you're setting things up. You feel it six months later when something breaks in a way nobody anticipated and the fix requires touching three systems you barely understand anymore. This is the breakdown I wish existed the last...

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23m read
Embarquer un modèle ML dans une app mobile offline-first - Architecture et retours d’expérience
DEV Community • 2026-04-28 09:22

Embarquer un modèle ML dans une app mobile offline-first - Architecture et retours d’expérience

Le défi Une application mobile qui communique avec un instrument de mesure terrain — forage, géotechnique, environnement — doit collecter des signaux en temps réel, les interpréter, et restituer une information exploitable à l'opérateur. Le tout sans connexion internet, sur un smartphone ou une tablette Android durcie. Le cas concret : des capteurs envoient des flux de données mécaniqu...

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8m read
Vision Language Models in Mobile App Testing
DEV Community • 2026-04-28 09:22

Vision Language Models in Mobile App Testing

For two decades, mobile test automation has been built on a flawed assumption: that an app is a collection of XML nodes rather than a visual interface designed for human eyes. Vision language models are the first technology that fundamentally fixes that assumption, and they are changing how engineering teams think about mobile app testing in 2026. Overview As per NMSC stats, the globa...

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9m read
DEV Community • 2026-04-28 09:20

UK Non-Dom Abolished: 6 Alternative Jurisdictions for 2026

UK Non-Dom Abolished: 6 Alternative Jurisdictions for 2026 The short version: The UK's non-domiciled tax regime was abolished in 2025. Former non-doms now face UK tax on worldwide income after 4 years of residence. This article compares the top 6 alternative jurisdictions, with Greece emerging as the strongest contender for most profiles. What Changed From April 2025, the UK...

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2m read
DEV Community • 2026-04-28 09:19

I Built an AI Agent to Do My Pre-Refinement. It Turned Into a Mirror of How We Wrote Tickets.

1 hour. Seven hours. Same ticket, same prompt, two days apart. The agent wasn't broken. It was showing me what my team had been doing silently for years. But I'm getting ahead of myself. The setup Most teams I've worked on have a stage between "product writes a ticket" and "the team estimates it" — pre-refinement, grooming, technical intake, different names for the same homework. A d...

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12m read
DEV Community • 2026-04-28 09:08

Tutorial: Build High-Throughput APIs with Go 1.24 and Gin 1.10

In 2024, API throughput remains the single biggest bottleneck for 68% of backend teams, with 42% of Go-based services failing to exceed 10k requests per second (RPS) on commodity hardware. This tutorial walks you through building a production-grade, high-throughput REST API using Go 1.24’s new low-latency GC and Gin 1.10’s optimized router, hitting 47k RPS on a 4-core VM with p99 latency under 12m...

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16m read
Hacker News: Front Page • 2026-04-28 09:07

$1,605: average annual ad value of a U.S. Google user

Article URL: https://proton.me/blog/what-is-your-data-worth-to-google Comments URL: https://news.ycombinator.com/item?id=47932060 Points: 12 # Comments: 6

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1m read
DEV Community • 2026-04-28 09:06

OPC UA from PHP? Yes, with Zero C Extensions — Introducing php-opcua/opcua-client

If you've ever tried to connect a PHP application to industrial machinery — a PLC, a SCADA system, a historian — you've probably hit a wall. The OPC UA standard is the lingua franca of industrial IoT, but most implementations assume you're writing in C++, Python, or .NET. PHP? Good luck finding anything that isn't a thin HTTP wrapper around a gateway you have to run separately. That changes with ...

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6m read
DEV Community • 2026-04-28 09:05

Stop Defaulting to WebSockets: A Practical Guide to SSE, Polling, and Knowing When You Actually Need Them

Stop Defaulting to WebSockets: A Practical Guide to SSE, Polling, and Knowing When You Actually Need Them You've been there. A ticket lands in your sprint: "Make the dashboard real-time." Your brain immediately jumps to WebSockets. Open a persistent connection, push data to the client, done — right? Not so fast. In my experience (and the experience of plenty of devs who've debugged We...

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9m read
DEV Community • 2026-04-28 09:04

After Knowledge, Discipline

Anatomy of a Claude Code setup that pays for itself The most common reaction when I show people my Claude Code workflow is some version of: "isn't that a lot of tokens?" It is. The flow front-loads context, plans before it implements, runs scripted checks after edits, and writes structured artifacts to disk for later steps to pick up. Compared to typing "build me a feature" into a fresh chat, it...

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23m read
DEV Community • 2026-04-28 09:03

War Story: We Ditched Angular 18 for Svelte 5 and Reduced Our 2026 Enterprise App Bundle Size by 58%

In Q3 2025, our 14-person frontend team stared down a 3.2MB initial bundle for our Angular 18 enterprise resource planning (ERP) app — a figure that triggered 4.7s first contentful paint (FCP) on mid-range mobile devices, cost us 12% of our trial user conversions, and left our Lighthouse performance score stuck at 38. Six months later, after migrating to Svelte 5, our production bundle shrank to 1...

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17m read
DEV Community • 2026-04-28 09:02

War Story: We Replaced Pinecone 1.5 with Milvus 2.4 and Reduced Our Vector DB Cost by 49%

\n At 3:17 AM on a Tuesday, our Pinecone 1.5 bill hit $42,000 for the month – 72% over budget, with p99 vector search latency spiking to 3.8 seconds during peak traffic. We switched to Milvus 2.4 three months later, and our monthly vector DB spend dropped to $21,420: a 49% reduction with p99 latency steady at 112ms. This is exactly how we did it, with zero downtime and no data loss. \n\n \n ...

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5m read
DEV Community • 2026-04-28 09:01

Comfort is not progress — the uncomfortable truth

Comfort is the silent killer of growth, and as developers, we fall prey to it more often than we'd like to admit. This isn't about slacking off; it's about recognizing when our familiar tools, workflows, or even our comfort zone with certain technologies become a barrier to becoming a better developer. Sticking with what's easy might feel good, but it rarely leads to significant improvement. Thi...

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2m read
Hacker News: Front Page • 2026-04-28 09:01

GitHub Copilot code review will start consuming GitHub Actions minutes

Article URL: https://github.blog/changelog/2026-04-27-github-copilot-code-review-will-start-consuming-github-actions-minutes-on-june-1-2026/ Comments URL: https://news.ycombinator.com/item?id=47932028 Points: 12 # Comments: 2

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Newest questions tagged javascript - Stack Overflow • 2026-04-28 09:00

Javascript - removing console.log from a function used to add members to an array of squad

I had previously added a console.log() call to your addCrewMember function to validate its behavior. now I'm asked to go ahead and remove the current console.log() call, to prevent the terminal from getting cluttered. const squad = []; function addCrewMember(crew, astronaut) { for (let i = 0; i < crew.length; i++) { if (crew[i].id === astronaut.id) { console.log("Duplicate ID: " + ast...

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1m read
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