cache - Neethahiremath/Wiki GitHub Wiki

In memory cache:

add below dependency in pom file


<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</dependency>

add @EnableCaching to main method

@Configuration
@EnableCaching
public class Application {
	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}
}

add below cache manager code in configuration class


private Cache cache;

@Bean
	public CacheManager cacheManager() {
		return new EhCacheCacheManager(ehCacheCacheManager().getObject());
	}
	
	@Bean
	public EhCacheManagerFactoryBean cacheManagerFctry() {
		net.sf.ehcache.config.Configuration configuration = new net.sf.ehcache.config.Configuration();
		configuration.setName("cache");
		net.sf.ehcache.CacheManager cacheManager = new net.sf.ehcache.CacheManager(configuration);
		cacheManager.addCache(cache);
	
		EhCacheManagerFactoryBean cacheMgrFactoryBean = new EhCacheManagerFactoryBean();
		cacheMgrFactoryBean.setAcceptExisting(true);
		cacheMgrFactoryBean.setCacheManagerName("cache");

		return cacheMgrFactoryBean;

add @Cacheable and store in cache - say its in CacheService class


@Cacheable("cache")
	public List<String> get() {
		long start = System.currentTimeMillis();
		List<String> res= find();

		log.info("query: took {}",
				System.currentTimeMillis() - start);
		return res;
	}

call CacheService.get() method and use the data.

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