Secrets Management 101
A practical guide to env vars, secret managers, rotation, and least privilege — with delivery patterns for web apps, workers, CI/CD, and Kubernetes.
devsecuritysecrets
Posts tagged “ops”
Tiny explainers grouped by topic. Spend less time Googling, more time building.
Connection Pooling for Databases — sizing, timeouts, and “too many clients” fixes
A production-focused guide to right-sizing pools, setting timeouts that prevent stalls, and fixing Postgres/MySQL “too many clients/connections” errors with app and proxy patterns.
devdatabasespostgres
Kubernetes, Minimal Survival Guide — ship, debug, and sleep at night
The 80% you actually need: Pods, Deployments, Services, Ingress/Gateway, Requests/Limits, Probes, Config & Secrets, HPA, storage, and the kubectl commands you’ll use daily.
devopskubernetes
Demystifying DNS Propagation — why changes aren’t instant
DNS changes feel slow because of caching everywhere: resolvers, browsers, OSes, CDNs, and parent zones. Here’s the mental model, typical timelines, and how to plan zero‑drama cutovers.
devdnsnetworking
Containers 101 — what they are and why they matter
A no-jargon primer on containers: how they isolate processes, how images/layers work, and what Docker/Kubernetes actually do.
devopscontainers
A Simple Guide to SSH Keys — generate & use keys for secure server access
Step-by-step: create an SSH key, add it to a server, use ssh-agent, set up ~/.ssh/config, and harden your SSH settings. Works on macOS, Linux, and Windows.
devsecurityssh
Cron expressions, decoded in 60 seconds
A quick mental model to read and write cron schedules without Googling.
devcronops