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Specialized index for IT topics
4Information helps IT professionals and learners find the technical content, products, and services they need. We combine specialized indexes, multiple ranking algorithms, and AI tools to surface documentation, vendor resources, tutorials, and product data with fewer distractions and greater technical relevance than general search engines. Part of the 4SEARCH network of topic specific search engines.
Latest Articles
I made two AIs review each other's code for 30 days. A human still caught the bug in 5 minutes.
54+ 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
49+ 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, 7+ min 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, 22+ 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, 42+ 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, 40+ 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, 40+ 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…...
EC2 Instance Unreachable via SSM Session Manager
2+ hour, 8+ 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, 41+ min ago (1344+ words) 1. Cenário de negócio Neste projeto, será implementado um VPC peering entre duas VPCs que... Tagged with aws, cloudcomputing, networking....
tokeneff: An Open-Source LLM Cost Meter That Runs Locally
2+ hour, 51+ min ago (338+ words) Most LLM dashboards show you the bill after the damage is done. You run a coding agent for an afternoon, ship a feature, and two days later your OpenAI dashboard says you spent $47. On what? Which model? Which request? You…...