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News
Your First AWS Production Architecture: From a Simple Application to a Scalable System
47+ min ago (1081+ words) Most people learn AWS by studying individual services. RDS is a database. But that's not how AWS is used in the real world. In a real project, these services work together to solve one problem: How do we run an…...
O que é Cloud Computing? (A visão de um estudante de tecnologia)
1+ hour, 30+ min ago (283+ words) Olá, pessoal! Sou o Davi. Este é o meu primeiro artigo no DEV Community. Sou estudante universitário da área de tecnologia e decidi começar a escrever para fixar o que venho aprendendo nas aulas e nos estudos individuais. Quando comecei…...
EC2 Instance Unreachable via SSM Session Manager
1+ hour, 14+ min ago (595+ words) This runbook resolves the situation where an EC2 instance is running and visible in the console but either does not appear in the Systems Manager Fleet Manager inventory, or returns a connection error when you attempt to start a Session Manager…...
VPC Peering: conectando redes privadas entre contas e regiões na AWS
1+ hour, 46+ min ago (1344+ words) 1. Cenário de negócio Neste projeto, será implementado um VPC peering entre duas VPCs que... Tagged with aws, cloudcomputing, networking....
Open Source 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐒𝐢𝐠𝐧𝐚𝐥 𝐒𝐞𝐫𝐯𝐞𝐫
3+ hour, 30+ min ago (389+ words) LLMs can become useful analysis assistants when they have structured data and real‑time market context, meaning they have enough relevant information for the task. Getting specific indicators, news, and candles into an LLM is difficult, even with search tools…...
How Randomness Helps Computers Solve Enormous Network Problems
3+ hour, 18+ min ago (180+ words) ...
The Usage-Based Billing Category Got Acquired in 2026
19+ min ago (619+ words) Metronome went to Stripe, Orb went to Adyen, m3ter is being folded into Salesforce. If independence matters to your API product, the shortlist …...
Production API Key Rotation Explained: 6 Least-Privilege Checks for Node.js GitHub Actions
4+ hour, 31+ min ago (886+ words) Short answer: use two narrowly scoped API keys, switch traffic with an explicit activation step, and revoke the old key only after logs and live requests prove the cutover. For a property-management service, that sequence rotates a production credential without…...
I Found an Undocumented MCP Server on OpenSea — and It Leaked Usernames for Any Wallet
4+ hour, 40+ min ago (492+ words) TL;DR: OpenSea runs an undocumented MCP server at mcp.opensea.io/mcp. One of its tools hands out API keys to anyone who asks, and another lets you resolve any Ethereum address with an OpenSea profile to its owner's…...
Build a small OpenOSRS plugin in Java
5+ hour, 34+ min ago (412+ words) A small plugin is a good way to learn a desktop client's extension system. This example displays a chat message after login. It covers discovery, dependency injection, game events and packaging without automating gameplay. I maintain the OpenOSRS project at…...