}

Tutorials Technology - Tech Tutorials

Recent Publications

23 min read Intermediate

Bash Scripting for DevOps 2026: 5 Production Scripts with Error Handling and Tests

Bash scripting for DevOps engineers: 5 production-ready scripts for log rotation, HTTP health checks, PostgreSQL backup, Docker deploy, and secret rotation — with error handling, ShellCheck, and bats tests.

14 min read Intermediate

Django REST Framework Tutorial 2026: JWT Auth, Permissions, Filtering, and Tests

Django REST Framework tutorial 2026: build a production API with JWT authentication (SimpleJWT), object-level permissions, DjangoFilterBackend filtering, pagination, and pytest-django tests.

13 min read Intermediate

Docker Compose v2 Tutorial 2026: From Local Dev to Production with Profiles, Health Checks, and Secrets

Docker Compose v2 tutorial 2026: compose.yaml structure, health checks, profiles for dev/staging/prod, secrets management, named volumes, depends_on with conditions, and production patterns.

17 min read Intermediate

FastAPI Tutorial 2026: Build a Production REST API with PostgreSQL, JWT Auth, and Docker

FastAPI tutorial 2026: build a production REST API with async PostgreSQL (SQLAlchemy 2.0), JWT authentication, Pydantic v2 validation, Alembic migrations, and Docker Compose deployment.

12 min read Intermediate

Git Rebase vs Merge vs Squash: When to Use Each (2026 Guide)

Git rebase vs merge vs squash explained: when each strategy produces a better commit history, how to do interactive rebase, how to fix a botched rebase, and team workflow recommendations.

11 min read Beginner

GitHub CLI (gh) Tutorial 2026: Replace Your Browser Workflow from the Terminal

Complete GitHub CLI (gh) tutorial 2026: manage issues, create and review PRs, trigger GitHub Actions, create releases, build custom aliases, and use gh in CI/CD scripts — full developer workflow from the terminal.

15 min read Intermediate

Go Goroutines and Channels: Production Concurrency Patterns (2026)

Master Go goroutines and channels with production patterns: worker pools, fan-out/fan-in, context cancellation, semaphores, and pipeline patterns — with benchmarks and real-world examples.

14 min read Intermediate

Helm Charts Tutorial 2026: Create, Test, and Publish Kubernetes Applications

Helm charts tutorial 2026: create a Helm chart from scratch, values.yaml overrides, dependencies, chart testing with helm unittest, and publishing to OCI registry (GHCR/ECR).

14 min read Beginner

Linux File Permissions Explained 2026: chmod, chown, umask, SUID/SGID, and ACLs

Linux file permissions complete guide 2026: read/write/execute bits, chmod octal and symbolic, chown, umask, SUID/SGID security risks, sticky bit, and setfacl/getfacl for fine-grained ACLs.

15 min read Intermediate

Linux Process Management 2026: ps, top, htop, btop, kill, nice, and OOM Killer

Linux process management guide 2026: ps aux, top, htop, btop/bpytop, kill signals, nice/renice, lsof, strace, /proc filesystem, zombie processes, OOM killer, and systemd-cgtop for cgroups.