DEV Community • 2026-04-17 08:33

How to Improve OpenClaw Agent Responses

If your OpenClaw agent gives weak answers, misses context, rambles, or produces work that feels low-value, the problem is usually not just "write a better prompt." Serious operators hit this wall when the system underneath the agent is under-specified. That is actually good news. Weak responses are often fixable. But the fix usually lives in identity, memory, tool access, routing, review design, ...

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7m read
Hacker News: Front Page • 2026-04-17 08:32

How Big Tech wrote secrecy into EU law to hide data centres' environmental toll

Article URL: https://www.investigate-europe.eu/posts/big-tech-data-centres-secrecy-eu-law-environment-footprint Comments URL: https://news.ycombinator.com/item?id=47803745 Points: 9 # Comments: 0

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1m read
I Tested PostgreSQL on 5 Million Rows, Here’s What Actually Makes Queries Fast
DEV Community • 2026-04-17 08:30

I Tested PostgreSQL on 5 Million Rows, Here’s What Actually Makes Queries Fast

when you run a query on a large table in postgres, the performance difference is rarely about the query syntax, it’s about how postgres chooses to access the data underneath to understand this better, i tested on my local machine the same query on a table with 5 million rows under different execution strategies and the results were drastically different What Really Happens When PostgreSQ...

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5m read
DEV Community • 2026-04-17 08:30

How Modern CSS Frameworks Transformed Web Styling From Chaos to Precision

As a best-selling author, I invite you to explore my books on Amazon. Don't forget to follow me on Medium and show your support. Thank you! Your support means the world! I remember when I started building websites. CSS felt like a constant negotiation. You’d write a style for a button, then another slightly different button, and soon you had a sprawling sheet full of similar but not-quite-the-...

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9m read
DEV Community • 2026-04-17 08:24

The Merging Take Is Too Early

Everyone is calling for AI coding tools to consolidate. We are not in the merging phase — we are in the explosion phase. Calling for consolidation right now is reading the cycle wrong. Everyone is calling for AI coding tools to merge. This week alone I've seen three takes saying the space is consolidating, the winners are picking themselves, time to pick a side. I think this is reading the cycle...

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4m read
How We Built a Chat Layer for GitHub Right Inside VS Code
DEV Community • 2026-04-17 08:23

How We Built a Chat Layer for GitHub Right Inside VS Code

Pair-coding with someone in the same repo, every chat ping forces an alt-tab. Discord on one monitor. Slack on another. PR comments in a browser tab. Then you come back to the editor and the thing you were about to type is already half-gone from your head. We got tired of it. We shipped GitChat, a VS Code extension that puts the chat panel where the code lives. No new account, no separate app. He...

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6m read
Best JavaScript UI Libraries to Use in 2026
DEV Community • 2026-04-17 08:22

Best JavaScript UI Libraries to Use in 2026

When it comes to developing enterprise applications and building complex business interfaces (CRM systems, ERP solutions, and dashboards), JavaScript UI libraries are indispensable. This is not just about buttons and input fields; it’s about powerful widgets: DataGrid, Scheduler, Pivot, Gantt, Spreadsheet, and other components that enable rapid business logic development and high performance when...

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8m read
DEV Community • 2026-04-17 08:19

Kiwi-chan Progress Report: Steady Mining!

Kiwi-chan's Existential Exploration: When Wanderlust Meets "Why Am I Doing This Again?" Hey everyone, and welcome back to the devlog for Kiwi-chan, our favorite block-breaking, locally-LLM-powered Minecraft AI! It's been another fascinating 4 hours in the server, filled with... well, mostly movement. The Loop of Life (and Logs) If you've ever tried to convince a toddler that...

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3m read
Processing long running events on AWS API Gateway
DEV Community • 2026-04-17 08:19

Processing long running events on AWS API Gateway

Processing long running events on AWS API Gateway AWS API Gateway is a managed HTTP/REST service provided by AWS. It provides a relatively simple way to host an API and offers rich functionality when it comes to customizability, security and integration. AWS API Gateway enforces a maximum integration timeout of 29 seconds. For most APIs this is perfectly reasonable. However, problems a...

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4m read
DEV Community • 2026-04-17 08:16

The Ultimate Container Showdown Choosing Between Alpine and Distroless

The rise of containerization has fundamentally shifted how software engineers package, distribute and deploy modern applications. In the early days of Docker most developers defaulted to using standard full-weight operating system images like Ubuntu or Debian. These monolithic base images provided a comfortable environment filled with familiar tools but they also introduced massive inefficiencies....

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11m read
The 270-Second Rule: How to Cut Claude Code API Costs by 90% with Smart
DEV Community • 2026-04-17 08:15

The 270-Second Rule: How to Cut Claude Code API Costs by 90% with Smart

Anthropic's prompt cache has a 5-minute TTL. Orchestrator loops running faster than 270 seconds pay ~10% of full input token costs. Key Takeaways Anthropic's prompt cache has a 5-minute TTL. Orchestrator loops running faster than 270 seconds pay ~10% of full input token costs. What Changed — The Cache TTL You're Probably Ignoring Anthropic's prompt caching has a 5-min...

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3m read
Running LLM Classification After the Response: Next.js after() + OpenRouter at $0.0002 per Call
DEV Community • 2026-04-17 08:15

Running LLM Classification After the Response: Next.js after() + OpenRouter at $0.0002 per Call

Platform: DEV.to (also cross-posted to Hashnode with canonical_url set to the DEV URL) Language: en Audience: Next.js / TypeScript / LLM developers building production features Angle: Implementation and design decisions. Shows real code from a production codebase. Suggested cover asset: topics/blog/external/assets/043-dev-llm-classification-pipeline.png (Gemini prompt at the bottom) Primary CTA: R...

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9m read
DEV Community • 2026-04-17 08:15

Tasks that don't make sense

This is the eighth post in my autism awareness month series. There's a pattern many autistic people recognize but rarely name: the inability to perform tasks that don't make sense. Not tasks that are hard, or unpleasant, or boring, but tasks whose purpose doesn't compute. This is different from procrastination. Procrastination is knowing you should do something and not doing it. What happens her...

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2m read
DEV Community • 2026-04-17 08:12

Designing ChatGPT Prompts & Workflows Like a Developer

Most developers try ChatGPT once, get a mediocre answer, and move on. The problem usually isn’t the model—it’s the input. Prompt design and workflow thinking are what separate “toy usage” from actually integrating ChatGPT into real development or content systems. Prompt Engineering = Input Engineering At a basic level, a prompt is just an instruction to a language model. But in pract...

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2m read
We Deployed a "Small Fix" and Took Down Production — Here's What Actually Happened
DEV Community • 2026-04-17 08:11

We Deployed a "Small Fix" and Took Down Production — Here's What Actually Happened

A minor backend change caused a production outage, high CPU usage, and API failures. Here's how it happened, what we missed, and how we fixed it. The Incident It started as a simple task. "Just add one more field to the API response." No major logic change. No risky deployment. Just a small enhancement. We deployed it to production… and within minutes: API response time jumped...

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2m read
DEV Community • 2026-04-17 08:11

Profling Claude Converstaions

It is the ultimate flow-killer. You sit down, open your IDE, get maybe three or four good turns into a complex refactor, and then—BAM. "You have reached your message limit until 4:00 PM." It feels broken. You just started! How is the tank already empty? This happened to me so often—while burning through $50 worth of tokens a day—that I realized I was flying completely blind. I had no idea what...

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3m read
DEV Community • 2026-04-17 08:10

RAGE-QUANT: 3x Faster LLM Inference on CPU with Pure Rust Quantized GEMV

Skip dequantization. Save 57% RAM. Get 3x faster decode. No GPU required. Every LLM framework (llama.cpp, candle, burn) does this: GGUF quantized weights → dequantize to f32 → f32 GEMV → result 4x DRAM bandwidth wasted ^ ^ 3.2 GB RAM for dense cache RAGE-QUANT does this instead: GGUF quantized weights → quantized GEMV → result reads 1.06 bytes/element inst...

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2m read
DEV Community • 2026-04-17 08:08

Smart Contract Interaction: Calldata Encoding Tools for AI Agents

Smart contract interaction for DeFi developers has always been a maze of protocol-specific APIs, custom calldata encoding, and fragmented documentation across 15+ protocols. Whether you're building trading bots, yield strategies, or multi-chain applications, you end up maintaining separate integrations for Jupiter, Aave, Lido, Drift, Hyperliquid, and dozens of other protocols — each with their own...

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5m read
Anthropic Releases Claude Opus 4.7: Key Changes and Migration Guide for Developers
DEV Community • 2026-04-17 08:07

Anthropic Releases Claude Opus 4.7: Key Changes and Migration Guide for Developers

Here is a developer-focused summary of what changed in Claude Opus 4.7, released on April 16, 2026. Note: This article is a personal summary based on publicly available information, not the official view of any company. This article does not constitute financial or investment advice. Where Opus 4.7 Sits Claude Opus 4.7 is Anthropic's most capable generally available model. It sits be...

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5m read
DEV Community • 2026-04-17 08:02

SambaNova: GPU-Free AI Inference at 5x Speed — AI University Update (78 Providers)

SambaNova: GPU-Free AI Inference — AI University Update (78 Providers) I've added SambaNova to the AI University, bringing the total to 78 providers. SambaNova is building AI inference chips that don't rely on NVIDIA GPUs — a significant shift in AI infrastructure. What is SambaNova? SambaNova designs RDU (Reconfigurable Dataflow Units) — custom silicon optimized for LLM ...

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1m read
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