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

Testing in DevOps — Unit, Integration, E2E, and Shift-Left

Master the testing pyramid for DevOps — from unit tests to E2E, shift-left testing, contract testing, handling flaky tests, testing infrastructure code, and building test stages into your CI/CD pipeline.

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Docker Debugging — exec, logs, inspect, and Why Your Container Won't Start

Master Docker debugging with practical techniques — reading logs, exec into containers, inspecting configuration, diagnosing startup failures, and monitoring resource usage.

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kubectl Mastery — 40 Commands Every K8s Admin Needs

The ultimate kubectl reference with 40 essential commands organized by category. Covers cluster info, resource management, debugging, output formatting, aliases, plugins, and kubeconfig management.

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SSH Mastery — Keys, Tunnels, Config and Security

Master SSH beyond the basics. Learn key-based authentication, ssh config file, port forwarding, jump hosts, scp, rsync, and sshd hardening for production servers.

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Terraform Expressions — Conditionals, Loops, and Dynamic Blocks

Master Terraform expressions including conditionals, count, for_each, for expressions, dynamic blocks, splat operators, and practical patterns for real-world infrastructure code.

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RDS vs Aurora vs DynamoDB — Which AWS Database Should You Use?

Cut through the noise on AWS databases. Compare RDS, Aurora, and DynamoDB with real cost numbers, performance benchmarks, and a decision tree that actually works.

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