Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
A prioritized toolkit for cutting CI time: measure the critical path first, then cache, parallelize, run only what changed, and shrink the work itself.
Run only the CI jobs a change actually affects using if conditionals, trigger path filters, and per-job path detection in a monorepo.
A practical guide to scoping GitHub Actions secrets correctly, avoiding leaks in logs, blocking fork-PR theft, and preferring OIDC over stored keys.
A practical guide to building, tagging, caching, and pushing Docker images from GitHub Actions using buildx, GHCR, and multi-arch builds.
Stop re-downloading the same packages on every CI run by caching dependencies with keys that actually hit.
A practical guide to matrix builds in GitHub Actions that tests across versions and platforms without burning your monthly minutes.
A likelihood-ordered checklist for tracing "Permission denied" on Linux through mode bits, ownership, ACLs, SELinux, and mount options.
Most breaches come from the same short list of application bugs. This is the map: the vulnerabilities that actually get exploited and how to shut each one down.
When a Linux box misbehaves, the same dozen problems come up again and again. This is the map: what each symptom means and the fast path to the fix.
A practical look at how SCA scanning finds vulnerable dependencies, cuts CVE noise, and where SAST, DAST, and IAST fit into CI/CD.
A field-tested workflow for diagnosing why a systemd unit refuses to start, from status output to exit codes to the usual root causes.
A lightweight, whiteboard-friendly way to find design-level security flaws that scanners miss, using STRIDE, data-flow diagrams, and four plain questions.
