Here we are going to cover how to use Ehcache 3 as a Spring caching in Spring boot based into JSR-107, before we start we need to just highlight what us JSR-107 :
JSR-107(JCache) Annotations:
In regards to caching, Spring offers support for two sets of annotations that can be used to implement caching. You have the original Spring annotations and the new JSR-107 annotations, for more information you can check :
https://spring.io/blog/2014/04/14/cache-abstraction-jcache-jsr-107-annotations-support
Steps to use EhCache3 with Spring boot :
1- Create a spring boot maven project
2- Add the following maven dependencies in your pom.xml along with spring boot dependencies
3- Set the spring.cache.jcache.config property to include the classpath and ehcache.xml file, enable the following in application.yml file
4- Enable caching in spring boot main class
5- Configure your EhCache xml file as the following
- the core namespace, the xsd can be found here: http://www.ehcache.org/schema/ehcache-core-3.0.xsd
- The JSR-107 namespace, the xsd can be found here: http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd
- XML Configuration Documentation: http://www.ehcache.org/documentation/3.0/xml.html
6- Then you can easily inject the cache manger in your bean class if you do not want to use just simple annotations to enable caching for your operations
7- Start accessing your caches from cache manager if you want to do direct operation over it like below , please check EhcacheAlertsStore.java in the GitHub project for more information
8- Complete code sample for testing is on GitHub where you can run it and play with the REST APIs for cache operations via the generated run-time swagger :
https://github.com/Romeh/spring-boot-web-Ehchache-3-Persistance
References :
- Ehcache 3.0 Documentation
- Spring Cache Abstraction
- Spring Cache Abstraction, JCache (JSR-107) annotations
