In simple words, cache<\/strong> means a store of things that will be required in future, and can be retrieved rapidly.<\/p><\/blockquote>\n How much will an application speed up with Caching?<\/strong><\/p>\n It depends on the multitude of factors being:<\/p>\n Spring<\/strong> contains cache manager interface org.springframework.cache.CacheManager, so we need to provide concrete implementation for cache storage.<\/p>\n One of the implementations for caching is : EhCache.<\/strong><\/em><\/p>\n This project involves\u00a0Ehcache in Spring<\/strong> with hibernate configuration. It follows Model View Controller ( MVC ) architecture.<\/p>\n Firstly take a maven project in eclipse using webapp archetype.<\/p>\n Add this maven dependency in your application\u2019s classpath to implement ehcache in your project :<\/p>\n\n
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<\/p>\nProject Structure<\/h3>\n
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<\/p>\nMaven dependency<\/span><\/h3>\n
<dependency>\r\n<groupId>org.hibernate<\/groupId>\r\n<artifactId>hibernate-ehcache<\/artifactId>\r\n<version>4.3.5.Final<\/version>\r\n<\/dependency><\/pre>\n
Configuring the cache storage<\/span><\/h3>\n
package com.spring.ehcache.config;\r\n\r\nimport org.springframework.cache.annotation.EnableCaching;\r\nimport org.springframework.cache.ehcache.EhCacheCacheManager;\r\nimport org.springframework.cache.ehcache.EhCacheManagerFactoryBean;\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.core.io.ClassPathResource;\r\n\r\n@Configuration\r\n@EnableCaching \/*This annotation registers CacheInterceptor or AnnotationCacheAspect,\r\n which will detect cache annotations like @Cacheable, @CachePut, and @CacheEvict.*\/\r\npublic class EHCacheConfig {\r\n\t\r\n\t\/* It shows cache enabling with EhCache-related beans in a separate configuration class.\r\n\t * Overriding these two beans is not needed if you want to stay with the default definition,\r\n\t * but we wanted to make cache transactions aware to synchronize put\/evict operations with\r\n\t * ongoing Spring-managed transactions.*\/\r\n\r\n\t @Bean\r\n\t public EhCacheManagerFactoryBean ehCacheManagerFactory() {\r\n\t EhCacheManagerFactoryBean cacheManagerFactoryBean = new EhCacheManagerFactoryBean();\r\n\t cacheManagerFactoryBean.setConfigLocation(new ClassPathResource(\"ehcache.xml\"));\r\n\t cacheManagerFactoryBean.setShared(true);\r\n\t return cacheManagerFactoryBean;\r\n\t }\r\n\t @Bean\r\n\t public EhCacheCacheManager ehCacheCacheManager() {\r\n\t EhCacheCacheManager cacheManager = new EhCacheCacheManager();\r\n\t cacheManager.setCacheManager(ehCacheManagerFactory().getObject());\r\n\t cacheManager.setTransactionAware(true);\r\n\t return cacheManager;\r\n\t }\r\n\r\n}\r\n<\/pre>\nController class<\/h3>\n
package com.spring.ehcache.controller;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.web.bind.annotation.RequestMapping;\r\nimport org.springframework.web.bind.annotation.RequestMethod;\r\nimport org.springframework.web.bind.annotation.RestController;\r\n\r\nimport com.spring.ehcache.entity.EhCacheEntity;\r\nimport com.spring.ehcache.model.EhCacheModel;\r\nimport com.spring.ehcache.repository.EhCacheRepositoryImpl;\r\n\r\n@RestController\r\npublic class EhCacheController {\r\n\t\r\n\t@Autowired\r\n\tEhCacheRepositoryImpl myrepo;\r\n\t\r\n\t@RequestMapping(value=\"test\" , method = { RequestMethod.OPTIONS, RequestMethod.GET })\r\n\tpublic List<EhCacheModel> myMethod() {\r\n\t\t\r\n\t\tList<EhCacheModel> demo = new ArrayList<>();\r\n\t\tList<EhCacheEntity> myDemoEntityList=myrepo.getEntity();\r\n\t\t\r\n\t\tfor(EhCacheEntity myDemoEntity : myDemoEntityList) {\r\n\t\t\tEhCacheModel d=new EhCacheModel();\r\n\t\t\td.setId(myDemoEntity.getUserId());\r\n\t\t\td.setName(myDemoEntity.getName());\r\n\t\t\tdemo.add(d);\r\n\t\t}\r\n\t\treturn demo;\r\n\t}\r\n\r\n}\r\n<\/pre>\nDAO Implementation<\/h3>\n
package com.spring.ehcache.repository;\r\n\r\nimport java.util.List;\r\n\r\nimport org.hibernate.Criteria;\r\nimport org.springframework.cache.annotation.Cacheable;\r\n\r\nimport com.spring.ehcache.entity.EhCacheEntity;\r\n\r\npublic class EhCacheRepositoryImpl extends EhCacheRepository {\r\n\t\r\n\t\/* @Cacheable indicates that the result of invoking a method (or all methods in a class) can be cached.\r\n\t * Each time an advised method is invoked, the caching behavior will be applied, \r\n\t * checking whether the method was already invoked for the given arguments.*\/\r\n\t\r\n\t@Cacheable(value = \"ehcache\")\r\n\tpublic List<EhCacheEntity> getEntity()\r\n\t{\r\n\t\tList<EhCacheEntity> myDemoEntitylist = null;\r\n\t\tCriteria cr = currentSession().createCriteria(EhCacheEntity.class);\r\n\t\tmyDemoEntitylist = cr.list();\r\n\t\treturn myDemoEntitylist;\r\n\t}\r\n}\r\n<\/pre>\n
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<\/p>\n