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Observability & SRE
Metrics, logs, tracing, error budgets, and reliability engineering culture.
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The Meter Is Running on Every Request
1+ hour, 52+ min ago (338+ words) The demo cost four pence. You ran it thirty times while building it, glanced at the total, and stopped thinking about it, because four pence is not a number anybody worries about. Then it shipped, and the cost stopped being…...
Five Failure Modes Evals Won't Catch And What To Do About Them
4+ hour, 5+ min ago (1076+ words) Evals are a critical part of every data and AI team’s agent development process. An engineer builds an eval, defines what a bad answer looks like, runs a judge against a test set, and ships when the score looks good....
tracehub-mcp: Giving AI Assistants a Real Query Interface Into Your LLM Traces
5+ hour, 20+ min ago (102+ words) The Copy-Paste Problem Here's what debugging an LLM application looks like for most... Tagged with aiengineering, mcp, observability, opensource....
TACACS+ Failover Testing: Rejection, Outage, and Recovery Are Different Tests
6+ hour, 3+ min ago (1131+ words) A TACACS+ rollout needs more than a successful login. Test what happens when one server is unavailable, when none can answer, and when the service returns. For each state, check who authenticated the user, what the user could do, and…...
My Best Engineer Broke Production. Then He Refused to Let Anyone Roll It Back.
5+ hour, 10+ min ago (968+ words) The deployment was his. The outage was real. Revenue was dropping. Everyone wanted the safest move available. He looked …...
Agones on Kubernetes: Scale Game Servers in 12 Steps
11+ hour, 56+ min ago (1604+ words) This tutorial walks through installing Agones 1.60 on a real Kubernetes cluster, deploying a Fleet of dedicated game servers, wiring up autoscaling so capacity tracks player demand, and allocating servers to matches through the SDK. By the end you’ll have a…...
My Best Engineer Stopped an Incident by Refusing to Deploy. I Almost Overruled Him.
6+ hour, 1+ min ago (891+ words) The release was approved, every test was green, and the deadline mattered. One senior engineer refused to press …...
My Cron Job Double-Fired and Placed the Same Order Twice — Here's My Postmortem
11+ hour ago (879+ words) I keep a Mac Mini in a closet running a handful of small scheduled Python jobs. One of them scans market data on a schedule and, when its rules fire, places tiny orders through an exchange API. Positions are around…...
How Developers Can Monitor Production — and Why It Matters
11+ hour, 7+ min ago (352+ words) When we write code, it often feels like the main thing is to make it work locally. But reality is different: the real life of a service begins not on your laptop, but in production. That’s where it faces load,…...
Windows 11 26H2 learned to run on processors without SSE 4.2 using POP4.2
17+ hour, 15+ min ago (194+ words) GameGPU An enthusiast has created a POP4.2 project that allows you to run the operating system Windows 11 version 26H2 on physical hardware without hardware support for SSE 4.2 instructions Successful build run Windows 11 2026 Update was demonstrated on a 2007 PC with an AMD K10 architecture…...