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Tutorials, guides, and insights on DevOps, SRE, and Cloud technologies.

Helm Charts — The Package Manager for Kubernetes

Learn Helm from scratch — charts, releases, repositories, Go templates, and creating your own chart. Covers helm install, upgrade, rollback, dependency management, multi-environment values, and a Helm vs Kustomize comparison.

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Systemd Deep Dive — Services, Timers, and Boot Targets

Learn systemd from scratch — create custom services that auto-restart, replace cron with systemd timers, manage boot targets, and troubleshoot with journalctl.

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Terraform Workspaces — Manage Dev, Staging, and Production

Learn how Terraform workspaces let you manage multiple environments from a single codebase — when to use them, when to avoid them, and what the alternatives look like.

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CloudFormation — Write Infrastructure as YAML, Deploy in Minutes

Master AWS CloudFormation from template anatomy to nested stacks. Learn parameters, intrinsic functions, change sets, drift detection, and how it compares to Terraform.

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Azure SQL vs Cosmos DB vs PostgreSQL — Choose the Right Database

Compare Azure SQL Database, Cosmos DB, and Azure Database for PostgreSQL — understand pricing models, consistency levels, scaling patterns, and when to use each with practical CLI examples.

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Monitoring 101 — Metrics, Logs, Traces, and the Golden Signals

Learn the three pillars of observability — metrics, logs, and traces — along with Google's Four Golden Signals, RED and USE methods, SLOs/SLIs/SLAs, and how to build monitoring that actually tells you what is broken.

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