Ehcache | 易学教程

Springboot and Ehcache - MultiCacheException

阅读更多关于 Springboot and Ehcache - MultiCacheException

问题 I'm trying to add caching to a springboot application and I am running into an issue where a org.ehcache.jsr107.MultiCacheException exception is being thrown during startup. I am using the following ( all loaded via Maven pom file): Springboot 1.5.5, Ehcache 3.3.1, Javax cache 1.0.0 My SpringBootApplication looks like this: @SpringBootApplication @EnableCaching public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } } I

How to get size of data in Infinispan cache, alternate for calculateInMemorySize of ehcache?

阅读更多关于 How to get size of data in Infinispan cache, alternate for calculateInMemorySize of ehcache?

问题 I am migrating from ehcache to infinispan. In ehcache we have net.sf.ehcache.Cache.calculateInMemorySize() to calculate in memory size. How to calculate in memory size in infinispan? 回答1: Tomas is right, there's no currently no way to calculate size of data in memory. We do however provide users with some guidelines on the memory overhead that Infinispan incurs, which helps users plan their memory requirements. Calculating the size of data in-memory is not trivial to achieve and requires a

Spring+SpringMVC+MyBatis深入学习及搭建(八)——MyBatis查询缓存

阅读更多关于 Spring+SpringMVC+MyBatis深入学习及搭建(八)——MyBatis查询缓存

1.什么是查询缓存 mybatis提供查询缓存，用于减轻数据库压力，提高数据库性能。 mybatis提供一级缓存和二级缓存。一级缓存是SqlSession级别的缓存。在操作数据库时需要构造sqlSession对象，在对象中有一个数据结构（HashMap）用于存储缓存数据。不同的sqlSession之间的缓存数据区域（HashMap）是互相不影响的。二级缓存是mapper级别的缓存，多个sqlSession去操作同一个Mapper的sql语句，多个sqlSession可以共用二级缓存，二级缓存是跨sqlSession的。为什么要用缓存？如果缓存中有数据就不用从数据库中获取，大大提高系统性能。 2.一级缓存 2.1一级缓存工作原理第一次发起查询用户id为1的用户信息，先去找缓存中是否有id为1的用户信息，如果没有，从数据库查询用户信息。得到用户信息，将用户信息存储到一级缓存中。如果sqlSession去执行commit操作（执行插入、更新、删除），清空sqlSession中的一级缓存，这样做的目的为了让缓存中存储的是最新的信息，避免脏读。第二次发去查询用户id为1的用户信息，先去找缓存中是否有id为1的用户信息，缓存中有，直接从缓存中获取用户信息。 2.2一级缓存测试 mybatis默认支持一级缓存，不需要在配置文件去配置。按照上边一级缓存原理步骤去测试。 @Test

Infinispan equivalent to ehcache's copyOnRead and copyOnWrite

阅读更多关于 Infinispan equivalent to ehcache's copyOnRead and copyOnWrite

问题 I am planning to implement a cache solution into an existing web app. Nothing complicated: basically a concurrent map that supports overflowing to disk and automatic eviction. Clustering the cache could be requirement in the future, but not now. I like ehcache's copyOnRead and copyOnWrite features, because it means that I don't have to manually clone things before modifying something I take out of the cache. Now I have started to look at Infinispan, but I have not found anything equivalent

When/How do I set Ehcache used by Hibernate size programmatically

阅读更多关于 When/How do I set Ehcache used by Hibernate size programmatically

问题 I have enabled 2nd level caching in Hibernate 4.3.11 by adding: config.setProperty("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"); config.setProperty("hibernate.cache.use_second_level_cache", "true"); to my Hibernate Config. This to my pom.xml (Not sure if necessary for pom definition to be this awkward) <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>4.3.11.Final</version> <exclusions>

EhCache: Simple Program not working

阅读更多关于 EhCache: Simple Program not working

问题 I'm new to EhCache, and on the way to implement as a distributed cache service. I was trying out simple programs, but not able to work out the error. I'm able to store data to cache, but not able to retrieve it. These are two simple programs i wrote for testing. package com.db.tests; import net.sf.ehcache.Cache; import net.sf.ehcache.CacheManager; import net.sf.ehcache.Element; public class TestCachePut { public TestCachePut() { // TODO Auto-generated constructor stub } /** * @param args */

how to use ehcache in spring mvc with hibernate

阅读更多关于 how to use ehcache in spring mvc with hibernate

问题 I am new to spring-mvc and want to integrate ehcache as second level cache in hibernate. I followed this tutorial ehcache Now entries in my hibernate.xml are as follows: <property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"/> <property name="hibernate.cache.use_second_level_cache" value="true"/> <property name="hibernate.cache.use_query_cache">true</property> <property name="hibernate.cache.provider_configuration_file_resource

how to use ehcache in spring mvc with hibernate

阅读更多关于 how to use ehcache in spring mvc with hibernate

缓存与饼干，spring mvc使用ehcache

阅读更多关于缓存与饼干，spring mvc使用ehcache

【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 缓存与饼干，spring mvc使用ehcache 需要用到的jar包 ehcache-2.7.5.jar(主程序) ehcache-spring-annotations-1.2.0.jar(注解) guava-r09.jar(依赖) slf4j-api-1.6.6.jar(依赖) 配置文件 ####spring配置中需要添加如下内容头部 xmlns:cache="http://www.springframework.org/schema/cache" xsi:schemaLocation http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd   <cache:annotation-driven cache-manager="cacheManager" />  <!--

分布式Ehcache Terracotta使用

阅读更多关于分布式Ehcache Terracotta使用

【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 分布式Ehcache集群间数据同步 EhCache 是进程中的缓存系统，一旦将应用部署在集群环境中，每一个节点维护各自的缓存数据，当某个节点对缓存数据进行更新，这些更新的数据无法在其它节点中共享，这不仅会降低节点运行的效率，而且会导致数据不同步的情况发生。使用Terracotta Server可以实现Ehcache的集群. 而针对集群之间数据同步的问题, Terracotta提供了WAN replication的方案. 使用时只需要在Ehcache配置文件配置即可, 然后系统会自动在不同集群之间同步数据. 主要特性: 消息缓冲解决冲突失效恢复使用ActiveMQ,支持topic,queue 异步通信等等数据同步的范围: put remove removeAll 应用场景一不同集群使用同一个Active Terracotta Server Array,然后保证Passive Terracotta Server Array的数据同步. 这种方式对集群之间的网络要求较高. 使用场景二不同的集群拥有独自的TSA, 但同步自身TSA的同时,还需要同步其它集群的TSA. 这种方式线路适合写操作比较少的应用. 使用场景三自定义一个replicator,从本地集群中提取更新的数据,以消息的形式发送到其它结点上.

订阅 Ehcache