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Document Liberica JDK with CRaC 

See gh-38350
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Sébastien Deleuze 2023-11-14 09:09:54 +01:00 committed by Moritz Halbritter
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spring-boot-project/spring-boot-docs/src/docs/asciidoc/deployment/efficient.adoc
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@ -72,7 +72,7 @@ To learn more about ahead-of-time processing, please see the <<native-image#nati
https://wiki.openjdk.org/display/crac/Main[Coordinated Restore at Checkpoint] (CRaC) is an OpenJDK project that defines a new Java API to allow you to checkpoint and restore an application on the HotSpot JVM.
It is based on https://github.com/checkpoint-restore/criu[CRIU], a project that implements checkpoint/restore functionality on Linux.
The principle is the following: you start your application almost as usual but with a CRaC enabled version of the JDK like https://www.azul.com/downloads/?package=jdk-crac#zulu[the one provided by Azul].
The principle is the following: you start your application almost as usual but with a CRaC enabled version of the JDK like https://bell-sw.com/pages/downloads/?package=jdk-crac[Bellsoft Liberica JDK with CRaC] or https://www.azul.com/downloads/?package=jdk-crac#zulu[Azul Zulu JDK with CRaC].
Then at some point, potentially after some workloads that will warm up your JVM by executing all common code paths, you trigger a checkpoint using an API call, a `jcmd` command, an HTTP endpoint, or a different mechanism.
A memory representation of the running JVM, including its warmness, is then serialized to disk, allowing a fast restoration at a later point, potentially on another machine with a similar operating system and CPU architecture.