Tutorials
Sign Container Images with Cosign in GitHub Actions
Learn how to sign container images with Cosign in GitHub Actions using keyless OIDC identity, then verify the signature before a Kubernetes deployment can proceed.
By Ilyas Rufai
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Technical Content Insights
Practical guides on APIs, infrastructure, developer documentation, and the systems behind better technical content.
Tutorials
How to Deploy a Stateful Application on Kubernetes
Learn how to deploy a stateful application on Kubernetes with persistent storage to keep your application data available when Pods restart or are recreated.
By Abdul Talha
Tutorials
Terraform Security Scanning in GitHub Actions
Add Terraform security scanning to GitHub Actions with Trivy, fail pull requests on high-risk misconfigurations, and keep approved infrastructure changes reviewable.
By Ilyas Rufai
Tutorials
How to Fix the "CrashLoopBackOff" Error in Kubernetes
Learn how to diagnose CrashLoopBackOff with kubectl describe and logs --previous, then fix app crashes, OOMKills, and failing liveness probes.
By Ilyas Rufai
Tutorials
Kubernetes ConfigMap vs Secret Explained
Learn when to use a Kubernetes ConfigMap vs Secret, why base64 is not encryption, and how to inject each into pods safely with env vars or volumes.
By Ilyas Rufai
Tutorials
How to Fix the "ImagePullBackOff" Error in Kubernetes
Learn how to diagnose ImagePullBackOff with kubectl describe, fix wrong image tags and private registry auth, and verify pods reach Running state.
By Ilyas Rufai
Tutorials
15 Docker Commands Every Developer Should Know (With Examples)
Learn how to run, debug, build, and clean up Docker workloads with the 15 CLI commands developers reach for most, grouped by workflow with copy-paste examples.
By Ilyas Rufai
Tutorials
How to Eliminate Long-Lived Cloud Keys in CI/CD Using OIDC
Learn how to replace static AWS access keys in GitHub Actions with short-lived OIDC credentials, configure strict IAM trust policies, and secure multi-environment deployment pipelines.
By Ilyas Rufai
Tutorials
Bitwise Operators for Boolean Flags in JavaScript
Learn how bitwise AND, OR, XOR, and NOT pack multiple boolean flags into a single integer, why the check is 1.5x faster than array lookup, and where the pattern appears in production systems.
By Wale Bashir
Tutorials
Encoding RBAC as a JWT Integer Without Redis
Store role permissions as a single integer in your JWT payload. The permission check becomes one CPU instruction with no database call, no Redis lookup, and a token that is 72% smaller.
By Wale Bashir
Tutorials
Field-Level Audit Logs: The Diff Primitive Every B2B API Needs
Enterprise customers don't just want an audit log. They want to know which field changed, from what, to what, and by whom. Most implementations get this wrong. This is the diff function that gets it right.
By Wale Bashir
Tutorials
Session Tokens vs JWTs: The False Dichotomy
Most auth tutorials force you to pick JWTs or sessions. Here is why that framing is wrong, and how the hybrid approach gives you the performance of JWTs with the revocation control of sessions.
By Wale Bashir
Tutorials
How to Automate Multi-Region Failover with AWS Lambda and Route 53
Master resilient disaster recovery on AWS. Learn how to orchestrate Route 53 health checks and Lambda functions to eliminate manual failover bottlenecks.
Tutorials
Rate Limiting Algorithms: Code Examples and Comparison
Compare token bucket, sliding window, and fixed window rate limiting, then implement each algorithm in Node.js with Redis.
By Wale Bashir
Tutorials
Webhook Handlers: Why Yours Fails Silently and How to Fix It
Learn why webhook handlers fail silently in production and how to implement retry logic, dead-letter queues, and structured logging.
By Wale Bashir
Tutorials
What Is Idempotent in REST API Design?
Learn why POST requests cause duplicate charges on retry, what idempotency keys do, and how to implement server-side deduplication in Node.js with PostgreSQL.
By Wale Bashir
Tutorials
Why Your Developer Tutorials Aren't Converting and How to Fix Them
Learn why your developer tutorials aren’t converting and how to fix them with faster results, clear outcomes, and practical examples.
