Package tech.jhipster.config.cache

Class PrefixedKeyGenerator

java.lang.Object

tech.jhipster.config.cache.PrefixedKeyGenerator

All Implemented Interfaces:

org.springframework.cache.interceptor.KeyGenerator

public class PrefixedKeyGenerator
extends Object
implements org.springframework.cache.interceptor.KeyGenerator

PrefixedKeyGenerator class.

This class is responsible for generating cache keys that are specific to a version of the application by prefixing them with git commit hash.

This allows multiple versions of an application to "share" the same distributed cache even when the structure of the values has changed between those versions of the software.

This case typically occurs in production to ensure zero-downtime updates across a cluster requiring that two different versions of the application have to run concurrently for some time.

Constructor Summary

Constructors

Constructor	Description
PrefixedKeyGenerator(org.springframework.boot.info.GitProperties gitProperties, org.springframework.boot.info.BuildProperties buildProperties)	Constructor for PrefixedKeyGenerator.

Method Summary

Modifier and Type	Method	Description
Object	generate(Object target, Method method, Object... params)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PrefixedKeyGenerator

public PrefixedKeyGenerator(org.springframework.boot.info.GitProperties gitProperties,
                            org.springframework.boot.info.BuildProperties buildProperties)

Constructor for PrefixedKeyGenerator.

Parameters:

gitProperties - a GitProperties object.

buildProperties - a BuildProperties object.

Method Detail

generate

public Object generate(Object target,
                       Method method,
                       Object... params)

Specified by:

generate in interface org.springframework.cache.interceptor.KeyGenerator