Custom Prometheus Metrics in Node.js + Express (2026)
June 29, 2026
Add Prometheus metrics to a Node.js + Express app with prom-client: a /metrics endpoint, custom counters and histograms, and safe low-cardinality labels.
#cloud-devops
GitHub Actions: Reusable Workflow vs Composite Action 2026
June 26, 2026
Reusable workflow vs composite action in GitHub Actions: jobs vs steps, secrets, nesting limits, and outputs—plus exactly when to use each, with YAML.
kubectl debug Ephemeral Containers: No-Shell Pods 2026
June 25, 2026
Debug a no-shell distroless pod with kubectl debug and ephemeral containers: the --target flag, /proc filesystem access, and CrashLoopBackOff pod copies.
Vitest Coverage Thresholds: Fail CI on Low Coverage (2026)
June 23, 2026
Set Vitest coverage thresholds that fail CI when coverage drops. Vitest 4 nested config, per-file and glob gates, plus a runnable GitHub Actions workflow.
Deploy a Node.js App to a VPS with Kamal 2 (2026)
June 21, 2026
Deploy a Node.js app to a VPS with Kamal 2: a from-scratch Docker setup with zero-downtime deploys, automatic Let's Encrypt SSL, and a Postgres accessory.
AWS CDK Testing in TypeScript: Test Before Deploy 2026
June 18, 2026
Learn AWS CDK testing in TypeScript: write fine-grained assertions, snapshot tests, and Aspect validation with Jest to catch infra bugs before you deploy.
Resize Kubernetes Pods Without Restart (2026 Guide)
June 16, 2026
Resize a running Kubernetes pod's CPU and memory without restarting it using in-place resize: kubectl commands, resizePolicy, QoS rules, and limitations.
Kubernetes Native Sidecar Containers: 2026 Guide
June 14, 2026
Kubernetes native sidecar containers, stable since v1.33: how a restartPolicy Always init container fixes startup order, Job completion, and graceful shutdown.