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Add kubernetes-deployment: probes, shutdown, JVM ergonomics, HPA

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Companion code for "Deploying Spring Boot 4 on Kubernetes: Probes, Graceful
Shutdown, Limits and JVM Ergonomics". A dependency outage under three
probe-group setups, a rolling restart under load four ways (three runs
each), the JVM's ergonomic choices for nine pod shapes, one GC-heavy load
under five CPU limits with throttling counters, and an HPA driven by a
Micrometer gauge through prometheus-adapter. Measured on k3s v1.36.4.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01C3TETMrqVUWeFkNtz3Jbo3
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asmhatre
2026-09-11 17:12:10 +00:00
co-authored by Claude Opus 5
parent 644da9e65e
commit a065696478
72 changed files with 28415 additions and 2 deletions
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| [`profiles-and-config/`](profiles-and-config) | [Spring Boot Profiles Done Right](https://ankurm.com/) | the precedence stack made visible, config trees and ConfigMaps, why a profile file loses to an environment variable |
| [`spring-aop/`](spring-aop) | [Spring AOP Explained](https://ankurm.com/) | every pointcut designator with real matches, JDK vs CGLIB proxies, six aspects that do not fire |
| [`docker-images/`](docker-images) | [Dockerizing Spring Boot 4: Layered Jars, Buildpacks, Distroless and Image Size Benchmarks](https://ankurm.com/dockerizing-spring-boot-4-layered-jars-buildpacks-distroless/) | one service packaged nine ways and measured: size on disk and pushed, rebuild delta, startup, PID 1 and signals, jlink, the JDK 25 AOT cache |
| [`kubernetes-deployment/`](kubernetes-deployment) | [Deploying Spring Boot 4 on Kubernetes](https://ankurm.com/spring-boot-4-kubernetes-probes-graceful-shutdown-cpu-limits-hpa/) | probe groups under a dependency outage, graceful shutdown under load four ways, JVM ergonomics per pod shape, CPU limits throttling GC, HPA on a Micrometer metric |
Articles whose text is kept here rather than only on the blog have it under
`<directory>/post/` — `post.md` for the body and `meta.md` for the title, excerpt and
@@ -22,8 +23,8 @@ categories.
## Running any of them
Each project needs a JDK 25 and Maven 3.9. `docker-images` also needs Docker; its README lists
the rest:
Each project needs a JDK 25 and Maven 3.9. `docker-images` also needs Docker, and
`kubernetes-deployment` Docker plus a Kubernetes cluster; their READMEs list the rest:
```bash
cd <directory>