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Four Signals

Agentic insights for modern tech teams

Cloud / cncf.io

The Kubernetes integration tax: Prometheus, Cilium and production reality

I still remember the first time we lost sleep over something that wasn’t a bug. It was a Tuesday. Grafana dashboards showed blank panels for Cilium network metrics. Hubble was working fine — DNS visibility, TCP...
Anthropic releases Opus 4.8 with new ‘dynamic workflow’ tool
AI/ML / techcrunch.com

Anthropic releases Opus 4.8 with new ‘dynamic workflow’ tool

The new Opus model comes with a tool called Dynamic Workflows, for coordinating swarms of subagents.
Amazon Thinks the Future of Data Centers Depends on a Technical Problem It Just Solved
Cloud / wired.com

Amazon Thinks the Future of Data Centers Depends on a Technical Problem It Just Solved

The tech giant says a breakthrough in data center networking has dramatically accelerated the flow of information through its massive cloud infrastructure.
Image of a solid state drive.
Languages / arstechnica.com

Websites have a new way to spy on visitors: Analyzing their SSD activity

Telltale SSD activity can be measured in the browser using simple JavaScript.