Posts (238+)

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August 2026

Kubernetes with kind:A Cluster for Learning, Testing, and POCs

Spin up a disposable local Kubernetes cluster with kind — install prerequisites, create a multi-node cluster, verify with kubectl, deploy a sample app, and tear it down cleanly.

Java

Java Records:Immutable Data Without the Boilerplate

What Java records are, when they shipped (JEP 395 / Java 16), the problem they solve, and practical use cases with code—from DTOs to sealed-pattern matching.

SOLID

SOLID in Practice:Apply the Five Without the Ceremony

Walk one order/payment notification service through all five SOLID principles end to end — the seams that matter, the ones that do not, and when to stop applying the checklist.

SOLID

Dependency Inversion:Depend on Abstractions, Not on `new`

Apply Dependency Inversion in Java: move Stripe and SMTP construction out of OrderProcessor, inject abstractions, and see how Spring DI is one wiring option — not the principle itself.

AI/ML

AI Agent Skills:What They Are and How to Use Them

Hands-on Cursor Agent Skills for beginners — what a skill is, where it lives, how to write a SKILL.md, and how the agent picks it up.

Git

Stay Off Main:Git Branches Without the Fear

Hands-on Git branching — create a feature branch, push it with upstream tracking, merge back into main, and clean up local and remote branches.

Git

When Push Fails:Merge Conflicts, Revert, and Rollback

Hands-on Git for the stuck push — fetch remote changes, resolve merge conflicts, then revert or roll back commits safely.

Spring Boot

Spring Cloud Gateway:Put a Front Door on Your Microservices

When to put an API gateway in front of your services, the trade-offs that matter, and a working Spring Cloud Gateway Server Web MVC example on the Servlet stack.

Git

Git Without the Panic:Init, Commit, Push

Hands-on Git for beginners — init a repo, stage and commit safely, read diffs, and push your first project to a remote.

SOLID

Interface Segregation:Stop Forcing Clients to Depend on What They Ignore

Apply Interface Segregation in Java: break a fat PaymentOperations interface into client-shaped seams so charge, refund, and report clients stop stubbing unused methods.