https://github.com/jonashackt/springone-2020-highlights
Notes for my personal highlights of SpringOne 2020
https://github.com/jonashackt/springone-2020-highlights
Last synced: 5 months ago
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Notes for my personal highlights of SpringOne 2020
- Host: GitHub
- URL: https://github.com/jonashackt/springone-2020-highlights
- Owner: jonashackt
- License: mit
- Created: 2020-11-19T13:15:09.000Z (over 5 years ago)
- Default Branch: main
- Last Pushed: 2021-03-19T07:24:51.000Z (about 5 years ago)
- Last Synced: 2025-04-07T11:47:15.590Z (about 1 year ago)
- Size: 2.89 MB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# springone-2020-highlights
Notes about my personal highlights of SpringOne 2020
[](https://springone.io/2020/schedule)
## Table of Contents
* [General observations](#general-observations)
* [Spring Boot Build Packs / Paketo.io](#spring-boot-build-packs--paketoio)
* [Spring Boot & GraalVM](#spring-boot--graalvm)
* [Spring Boot K8s Support](#spring-boot-k8s-support)
---
### General observations
Find all video-recordings at https://springone.io/2020/schedule (you need to create an account, but most are also on Youtube)
* Pivotal is now --> VMWare Tanzu
* As Kubernetes becomes Industry-Standard, Pivotal Cloud Foundry is now legacy --> and VMWare Tanzu (Kubernetes Grid, see [heise.de](https://www.heise.de/ix/meldung/Fuer-Cloud-Entwickler-VMware-bringt-vSphere-7-und-Tanzu-auf-den-Markt-4672272.html)) is now the thing
* Everything: Buildpacks!
---
### Spring Boot Build Packs / Paketo.io
__*"Spring to Image"*__ by https://twitter.com/nebhale / https://springone.io/2020/sessions/spring-to-image
> Dockerfiles are super flexible, what is their weakness at the same time
> Build Packs (Heroku invented 2011), Cloud Foundry mainstreamd from 2013
> CNCF-Project: Specification how to turn Applications into Docker Images
https://www.cncf.io/blog/2020/11/18/toc-approves-cloud-native-buildpacks-from-sandbox-to-incubation/
> like Jib https://github.com/GoogleContainerTools/jib, ko https://github.com/google/ko, Bazel (https://bazel.build/)
__--> More details: https://github.com/jonashackt/spring-boot-buildpack__
---
### Spring Boot & GraalVM
__*"The Path Towards Spring Boot Native Applications"*__ by https://twitter.com/sdeleuze & https://twitter.com/andy_clement
currently supported (0.8.x):
* actuator
* Cache
* Data JPA, R2DBC...
* JDBC
* Logging (Logback)
* Thymeleaf
* Validation
* Web (Spring MVC with Tomcat)
* Webflux (Netty)
* Wavefront
* Spring Cloud Function
> Roadmap: 0.9.x & Beta status Dec 2020
because of native image, Bean Registration becomes functional Style
> Functional Bean Registration reduced startup times by ~ 50%, executable also ~ 50%
> generator from @Configuration bean registrations to functional Style: https://github.com/spring-projects-experimental/spring-init
__--> More details: https://github.com/jonashackt/spring-boot-graalvm__
https://blog.codecentric.de/en/2020/05/spring-boot-graalvm/
---
### Spring Boot K8s Support
__*"Spring Boot Loves K8s"*__ by https://twitter.com/bclozel & https://twitter.com/snicoll
--> Example Code: https://github.com/snicoll/spring-boot-loves-k8s
##### Layered jars & Build Packs
see [Spring Boot Build Packs / Paketo.io](#spring-boot-build-packs--paketoio) :)
kpack Kubernetes service
##### Health States
Concept:
* Liveness (Correct, Broken)
* Readiness (Accepting Traffic, Refusing Traffic)
+ new programming model inkl. Reactive Endpoints "recover" Exceptions, which will be delivered to the frontend, when specific state is reached
- `AvailabilityChangeEvent`, if state of the App changed --> really cool!
##### Graceful Shutdown
New property:
```shell script
server.shutdown=graceful
```
--> With this the app will response to all requests, that were received until this point --> and shutdown only, wenn they are send
##### Spring Boot 2.4+
```shell script
spring.config.activate.on-cloud-platform=kubernetes
```
optimize graceful shutdown more (for when routing state is changing, but routing traffic is still send to apps)
layered jars index default, metadata for CI/CD pipelines