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GitLab's New Rate Limits: What to Fix Before Oct 19
GitLab is capping unauthenticated API calls at 60 an hour starting October 19, and the preview windows land before most teams will have noticed.
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Conditional Jobs and Path Filters in GitHub Actions
Run only the CI jobs a change actually affects using if conditionals, trigger path filters, and per-job path detection in a monorepo.
Using Secrets in GitHub Actions Safely
A practical guide to scoping GitHub Actions secrets correctly, avoiding leaks in logs, blocking fork-PR theft, and preferring OIDC over stored keys.
Build and Push Docker Images in GitHub Actions
A practical guide to building, tagging, caching, and pushing Docker images from GitHub Actions using buildx, GHCR, and multi-arch builds.
Cache Dependencies in GitHub Actions
Stop re-downloading the same packages on every CI run by caching dependencies with keys that actually hit.
GitHub Actions Matrix Builds That Don't Waste Minutes
A practical guide to matrix builds in GitHub Actions that tests across versions and platforms without burning your monthly minutes.
Linux "Permission Denied" — Diagnose It Fast
A likelihood-ordered checklist for tracing "Permission denied" on Linux through mode bits, ownership, ACLs, SELinux, and mount options.
Application Security Best Practices — The Complete Guide
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.
Linux Troubleshooting — The Complete Guide
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.
Dependency Scanning and SCA — A Practical Guide
A practical look at how SCA scanning finds vulnerable dependencies, cuts CVE noise, and where SAST, DAST, and IAST fit into CI/CD.
Debugging a systemd Service That Won't Start
A field-tested workflow for diagnosing why a systemd unit refuses to start, from status output to exit codes to the usual root causes.
Threat Modeling for Engineers — A Practical Guide
A lightweight, whiteboard-friendly way to find design-level security flaws that scanners miss, using STRIDE, data-flow diagrams, and four plain questions.
The HTTP Security Headers Guide (with CSP)
A practical walkthrough of the HTTP response headers that harden a web app, with a real rollout plan for Content-Security-Policy.