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I made two AIs review each other's code for 30 days. A human still caught the bug in 5 minutes.
47+ min ago (905+ words) Last month I let AI write 100% of my code for 30 days. The single loudest lesson wasn't "AI is amazing" or "AI is useless." It was one sentence: the thing that writes the code can never be the thing that reviews…...
Record why an approach was rejected—and when to revisit it
43+ min ago (564+ words) Disclosure: I maintain Selvedge, an open-source decision-history tool. This article was prepared with AI assistance from Grok and Codex. The example below is hypothetical and uses plain Markdown; it does not require a particular product. A repository can show what…...
The best coding agent still gets ~6 in 10 changes wrong. That is your review load.
1+ hour ago (244+ words) While tech review articles argue about what PR length is safe to let an agent produce, the review problem is set by a simpler number: how often the agent is wrong. Specific Labs' Real-SWE benchmark, published September 2026, runs frontier agents…...
56 fault-injection tests passed. The one that injected nothing failed.
1+ hour, 16+ min ago (415+ words) I was building a tool that detects when data quietly changes meaning — a vendor switching units, a source dropping a field, an undocumented enum appearing. The kind of failure where every test passes and every job is green. Claims about…...
Your First AWS Production Architecture: From a Simple Application to a Scalable System
1+ hour, 36+ 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…...
Your Fine-Grained GitHub Token Gets 404, Not 403. Check These Four Things Before the URL.
1+ hour, 34+ min ago (398+ words) Your script calls the GitHub API with a fine-grained personal access token and gets 404 Not Found on a repository you can open in the browser. The URL is right. The repository exists. You will spend the next twenty minutes checking…...
Someone Force-Pushed Over main. Here Is the Reflog Nobody Knows They Have.
1+ hour, 34+ min ago (423+ words) A colleague pushed a fix to main. Ten minutes later you amended a commit message and ran git push --force. Their commit is no longer reachable from any branch on the server. This is the one Git command that can…...
O que é Cloud Computing? (A visão de um estudante de tecnologia)
2+ hour, 19+ 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
2+ hour, 2+ 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
2+ hour, 35+ min ago (1344+ words) 1. Cenário de negócio Neste projeto, será implementado um VPC peering entre duas VPCs que... Tagged with aws, cloudcomputing, networking....