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• The Complete Guide to Installing k3s in an Air-Gapped Network — From Image Tarball Transfer to a Private Registry and Agent Joins ♪ Listenable

  Covers the whole process of standing up a k3s cluster on a network with no internet path at all, command by command. It walks through downloading the airgap image tarball and the k3s binary on a connected machine, buildi

  2026-07-31 · 20 min read #kubernetes#k3s#air-gap#on-premise#containerd

• Air-Gapped Kubernetes Day 2 Operations — How to Stop a Cluster From Dying of Certificate Expiry ♪ Listenable

  What actually kills an air-gapped cluster is usually not some spectacular outage but certificate expiry. Let a year go by with nobody touching it and the API server quietly stops, and with no internet you cannot search y

  2026-07-31 · 20 min read #kubernetes#air-gap#day2-operations#etcd#certificate

• Designing an Air-Gapped Image Import Pipeline — skopeo, Harbor, and a Reimport Runbook That Doesn't Rot

  This post designs the pipeline for a problem almost nobody in air-gapped Kubernetes actually gets right: repeatedly and safely bringing container images in. It covers managing the import list as code, the skopeo sync com

  2026-07-31 · 17 min read #kubernetes#air-gap#harbor#skopeo#supply-chain

• Authentication, Authorization, and IDOR — Why the Login Is Fine but You Can See Data That Belongs to Someone Else

  Most real data breaches come from authorization, not authentication. The classic case is IDOR, where the login passes normally but changing only the ID in the URL returns another user resource verbatim. This post separat

  2026-07-26 · 15 min read #security#authorization#idor#api#multi-tenant

• How the Stanford Prison Experiment Fell Apart — What the Archives Revealed

  The 1971 prison experiment run by Philip Zimbardo entered textbooks and feature films as the story of ordinary students who became brutal guards in six days. Yet the original data appeared not in a top-tier journal but i

  2026-07-26 · 9 min read #psychology#paper-review#social-psychology#replication#research-ethics

• How Characters Change — The Grammar of Character Arc Design

  Plot is the order of events; the arc is the change in a person. In a good story the two share the same scenes and push each other forward. Here are the three arcs — the positive one that lets go of a false belief, the ne

  2026-07-26 · 12 min read #storytelling#character#fiction#narrative#craft

• The Experiment Where One Dollar Beat Twenty — Cognitive Dissonance and Sixty Years of Rebuttal

  Participants were made to do a deliberately boring task, then asked to lie about it. One group was paid one dollar, the other twenty dollars. The people who later rated the task as more enjoyable were the ones who had be

  2026-07-26 · 13 min read #psychology#paper-review#social-psychology#decision-making#mindset

• The Milgram Obedience Experiment Reexamined — the Other Side of That 65 Percent

  The Milgram experiment, begun at Yale in 1961, has been summarized in one sentence for decades: 65 percent of participants went all the way to the maximum voltage. But that figure is the value from one of some 24 variati

  2026-07-26 · 11 min read #psychology#paper-review#social-psychology#obedience#research-ethics

• The 38 Were Never There — The Myth of the Bystander Effect and the Real Experiment

  The 1964 New York Times article reporting that 38 neighbors merely watched while Kitty Genovese was murdered gave birth to the concept of the bystander effect. Then a 2007 review in American Psychologist established that

  2026-07-26 · 12 min read #psychology#paper-review#social-psychology#ethics#communication

• Is the Three-Act Structure a Law or a Convention — The Lineage of Story Structure and Its Limits

  It is no accident that films tend to turn at the same places. Aristotle never spoke of three acts, and the three-act structure we know today is a twentieth-century invention that became an industry standard when Syd Fiel

  2026-07-26 · 13 min read #storytelling#screenwriting#narrative#film#craft

• Secrets Management — Why a .env File Is Not Enough, the Paths Environment Variables Leak Through, and How to Design Rotation

  Adding .env to .gitignore does not make a secret safe. The process environment is readable verbatim from the same host through /proc/PID/environ, it rides out in crash reports, debug pages and CI logs, and it stays forev

  2026-07-26 · 16 min read #security#secrets#devops#vault#kubernetes

• Actually Fixing Core Web Vitals — The Order in Which You Bring LCP, INP, and CLS Down

  Scoring 98 in Lighthouse while Search Console stays red happens because the two tools measure different things. This post starts by laying out what LCP, INP, and CLS each measure and why the thresholds apply at the 75th

  2026-07-26 · 15 min read #performance#core-web-vitals#lcp#inp#cls

• Why Average Response Time Lies — How to Read p50, p95, and p99 Properly

  A service whose average response time is 80ms can still keep users waiting three seconds, and that happens all the time. This post explains what the average hides in a long-tail distribution, which question each of p50,

  2026-07-26 · 11 min read #observability#percentile#prometheus#histogram#slo

• Decoding the TLS handshake and certificate errors — why the browser works but curl fails

  When the browser shows a healthy padlock while only curl and server-side calls fail with a certificate error, the problem is server configuration. The browser downloads the missing intermediate certificate itself through

  2026-07-26 · 15 min read #network#tls#ssl#openssl#security

• LLM Inference VRAM Math — the KV Cache Blows Up Before the Weights Do

  How to answer "will this model fit on our GPU" with a few multiplications. Weight memory is just parameter count times bytes per parameter, but the thing that actually blocks a deployment is the KV cache, which grows wit

  2026-07-26 · 12 min read #llm#inference#vram#kv-cache#quantization

• HTTP Keep-Alive and connection reuse — the timeout race condition behind intermittent 502s

  When the backend logs contain no errors at all and only the load balancer intermittently mixes in 502s, it is usually a connection reuse race condition. At the exact moment the server closes an idle connection, the clien

  2026-07-26 · 15 min read #network#http#performance#load-balancer#tcp

• On Getting Older — Where the Common Story and the Data Come Apart

  Across data from many countries, the age at which life satisfaction is lowest sits somewhere around forty-seven, and after that it mostly rises. The U-curve does have serious critics, though. This post walks through the

  2026-07-26 · 12 min read #mindset#aging#psychology#life#health

• Loneliness Works Like Hunger — How to Read a Signal of Deficit

  Loneliness is not the state of being alone. It is the gap between the relationships you want and the ones you actually have. John Cacioppo read that sensation as a deficit signal from the same family as hunger and thirst

  2026-07-26 · 12 min read #mindset#healing#loneliness#relationships#connection

• How Much May a Historical Novel Invent — The Contract Between Fact and Fiction

  A historical novel begins by signing a quiet contract with its reader: leave the known untouched and fill only the places where the record is blank. Here is the three-layer structure of fact, interpretation and invention

  2026-07-26 · 11 min read #storytelling#historical-fiction#fiction#narrative#history

• How to Decide Well — A Good Decision and a Good Outcome Are Not the Same Thing

  When the last pass of the Super Bowl was intercepted, everyone called it the worst call in history. But grading a decision by its outcome erases almost everything there was to learn from it. Here is the idea of resulting

  2026-07-26 · 12 min read #mindset#decision-making#psychology#productivity#self-improvement