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EasyJWeb+JPA(Hibernate3.2)+Spring2构架缓存技术
总体思路:使用Hibernate3.2的二级缓存,解决使用频率最多的find(Class clz,Object id)方法的缓存。
一、使用Hibernate3.2的二级缓存功能,只开取针对id查找实体的缓存,不开启基于list查询的缓存。
技术调整如下:
1、升级Spring2的版本号,升级为2.06,更新spring.jar、spring-aspects.jar、spring-mock.jar,为了使用spring modules中提供的cache功能,增加了spring-modules-cache.jar。以上包已经添加到svn中。
2、修改jpa-base.xml中的entityManagerFactory Bean的配置信息,把对loadTimeWeaver属性的注入注释掉。
propertyname="persistenceXmlLocation"value="classpath:persistence.xml">property>
propertyname="dataSource"ref="dataSource">property>
propertyname="jpaVendorAdapter">
BEANclass=org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter>
<property><span style="COLOR: #0000ff">="database"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="MYSQL"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="showSql"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="generateDdl"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #008000"><!--</span><span style="COLOR: #008000"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><propertyname="loadTimeWeaver"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><bean<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></property></span><span style="COLOR: #008000">--></span><span style="COLOR: #000000"></span></span></span></property>
在persistence.xml文件中,添加如下的配置信息,开启Hibernate的二级缓存:
propertyname="hibernate.cache.use_query_cache"value="false">property><!--</span><span style="COLOR: #008000">暂时不开querycache</span><span style="COLOR: #008000">-->
3、在src目录下增加ehcache.xml,设置cache的配置信息,默认情况下可以考虑给一些常用的Entity类设置一个单独的cache区域,如下所示:
<!--</span><span style="COLOR: #008000">配置信息的说明如下:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />缺省缓存配置。CacheManager会把这些配置应用到程序中。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />下列属性是defaultCache必须的:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />maxInMemory-设定内存中创建对象的最大值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />eternal-设置元素(译注:内存中对象)是否永久驻留。如果是,将忽略超<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />时限制且元素永不消亡。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToIdleSeconds-设置某个元素消亡前的停顿时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是在一个元素消亡之前,两次访问时间的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效(译注:如果对象永恒不灭,则<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />设置该属性也无用)。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />如果该值是0就意味着元素可以停顿无穷长的时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToLiveSeconds-为元素设置消亡前的生存时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是一个元素从构建到消亡的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />overflowToDisk-设置当内存中缓存达到maxInMemory限制时元素是否可写到磁盘<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />上。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #008000">-->
4、然后修改Domain对象,对于要使用缓存的的Entity,在类声明前加上如下的标签:BR>@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE),此处usage的值还需要根据应用情况进行必要的调整。BR>P>P>5、暂时使用ehcache作为Springmodules的cache。在ehcache.xml文件中继续配置用于为spring提供方法调用结果的缓存。大致如下:
CACHEname="CMSCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
CACHEname="ECCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
6、然后在具体的Service类中配置缓存。使用了AOP,需要修改spring的配置文件,比如cms-core.xml中为了给ICmsManageService的get*方法添加结果缓存,调整如下:
<bean><span style="COLOR: #0000ff">=com.easyjf.cms.service.impl.CmsManageServiceImpl></span></bean>
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #ff0000">cachename</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="get*"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="update*"</span><span style="COLOR: #ff0000">cachenames</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">when</span><span style="COLOR: #0000ff">="before"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">EHCACHE:PROXY</span><span style="COLOR: #0000ff">></span></span></span></span></span></span></span></property>
调整前对照:
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"></span></span></span></span></span></property>
为了让Spring配置文件能识别并处理EHCACHE:XXX>这个标签,需要在beans中进行schem声明,如下所示:BR>另外在spring配置文件中再增加EHCACHE:CONFIGconfiglocation="classpath:ehcache.xml">EHCACHE:CONFIG>,以便Spring能找到Cache配置文件。EHCACHE:XXX>
7、以上只是基本的配置,cache运行的具体性能,还需要根据实际的数据量及并发量等进行更加细致的调整。
8、另外EasyJWeb还将会提供一个页面结果缓存,直接缓存Action的执行结果,这样就可以解决访问得最多,属于严重性能瓶颈的问题。比如ec-brand.ejf、index.ejf等。这一功能将在9月15号前推出。
9、一些必要的页面,需要增加静态文件生成功能。(逐渐调整)
由于发现Spring2.06版本与当前我们使用的版本存在一些冲突。而且跟EasyJWeb中的maven混合编译的时候存在一些问题,因此暂时取消使用Spring的方法Cache,而只使用Hibernate的Cache及EasyJWeb的缓存配合。EasyJWeb的缓存简单机制已经实现,直接在基于AbstractCmdAction的Action中,在要缓存的Command中使用缓存标签@WebCache即可。
总体思路:使用Hibernate3.2的二级缓存,解决使用频率最多的find(Class clz,Object id)方法的缓存。
一、使用Hibernate3.2的二级缓存功能,只开取针对id查找实体的缓存,不开启基于list查询的缓存。
技术调整如下:
1、升级Spring2的版本号,升级为2.06,更新spring.jar、spring-aspects.jar、spring-mock.jar,为了使用spring modules中提供的cache功能,增加了spring-modules-cache.jar。以上包已经添加到svn中。
2、修改jpa-base.xml中的entityManagerFactory Bean的配置信息,把对loadTimeWeaver属性的注入注释掉。
propertyname="persistenceXmlLocation"value="classpath:persistence.xml">property>
propertyname="dataSource"ref="dataSource">property>
propertyname="jpaVendorAdapter">
BEANclass=org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter>
<property><span style="COLOR: #0000ff">="database"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="MYSQL"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="showSql"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="generateDdl"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #008000"><!--</span><span style="COLOR: #008000"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><propertyname="loadTimeWeaver"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><bean<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></property></span><span style="COLOR: #008000">--></span><span style="COLOR: #000000"></span></span></span></property>
在persistence.xml文件中,添加如下的配置信息,开启Hibernate的二级缓存:
propertyname="hibernate.cache.use_query_cache"value="false">property><!--</span><span style="COLOR: #008000">暂时不开querycache</span><span style="COLOR: #008000">-->
3、在src目录下增加ehcache.xml,设置cache的配置信息,默认情况下可以考虑给一些常用的Entity类设置一个单独的cache区域,如下所示:
<!--</span><span style="COLOR: #008000">配置信息的说明如下:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />缺省缓存配置。CacheManager会把这些配置应用到程序中。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />下列属性是defaultCache必须的:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />maxInMemory-设定内存中创建对象的最大值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />eternal-设置元素(译注:内存中对象)是否永久驻留。如果是,将忽略超<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />时限制且元素永不消亡。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToIdleSeconds-设置某个元素消亡前的停顿时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是在一个元素消亡之前,两次访问时间的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效(译注:如果对象永恒不灭,则<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />设置该属性也无用)。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />如果该值是0就意味着元素可以停顿无穷长的时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToLiveSeconds-为元素设置消亡前的生存时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是一个元素从构建到消亡的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />overflowToDisk-设置当内存中缓存达到maxInMemory限制时元素是否可写到磁盘<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />上。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #008000">-->
4、然后修改Domain对象,对于要使用缓存的的Entity,在类声明前加上如下的标签:BR>@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE),此处usage的值还需要根据应用情况进行必要的调整。BR>P>P>5、暂时使用ehcache作为Springmodules的cache。在ehcache.xml文件中继续配置用于为spring提供方法调用结果的缓存。大致如下:
CACHEname="CMSCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
CACHEname="ECCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
6、然后在具体的Service类中配置缓存。使用了AOP,需要修改spring的配置文件,比如cms-core.xml中为了给ICmsManageService的get*方法添加结果缓存,调整如下:
<bean><span style="COLOR: #0000ff">=com.easyjf.cms.service.impl.CmsManageServiceImpl></span></bean>
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #ff0000">cachename</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="get*"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="update*"</span><span style="COLOR: #ff0000">cachenames</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">when</span><span style="COLOR: #0000ff">="before"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">EHCACHE:PROXY</span><span style="COLOR: #0000ff">></span></span></span></span></span></span></span></property>
调整前对照:
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"></span></span></span></span></span></property>
为了让Spring配置文件能识别并处理EHCACHE:XXX>这个标签,需要在beans中进行schem声明,如下所示:BR>另外在spring配置文件中再增加EHCACHE:CONFIGconfiglocation="classpath:ehcache.xml">EHCACHE:CONFIG>,以便Spring能找到Cache配置文件。EHCACHE:XXX>
7、以上只是基本的配置,cache运行的具体性能,还需要根据实际的数据量及并发量等进行更加细致的调整。
8、另外EasyJWeb还将会提供一个页面结果缓存,直接缓存Action的执行结果,这样就可以解决访问得最多,属于严重性能瓶颈的问题。比如ec-brand.ejf、index.ejf等。这一功能将在9月15号前推出。
9、一些必要的页面,需要增加静态文件生成功能。(逐渐调整)
由于发现Spring2.06版本与当前我们使用的版本存在一些冲突。而且跟EasyJWeb中的maven混合编译的时候存在一些问题,因此暂时取消使用Spring的方法Cache,而只使用Hibernate的Cache及EasyJWeb的缓存配合。EasyJWeb的缓存简单机制已经实现,直接在基于AbstractCmdAction的Action中,在要缓存的Command中使用缓存标签@WebCache即可。
总体思路:使用Hibernate3.2的二级缓存,解决使用频率最多的find(Class clz,Object id)方法的缓存。
一、使用Hibernate3.2的二级缓存功能,只开取针对id查找实体的缓存,不开启基于list查询的缓存。
技术调整如下:
1、升级Spring2的版本号,升级为2.06,更新spring.jar、spring-aspects.jar、spring-mock.jar,为了使用spring modules中提供的cache功能,增加了spring-modules-cache.jar。以上包已经添加到svn中。
2、修改jpa-base.xml中的entityManagerFactory Bean的配置信息,把对loadTimeWeaver属性的注入注释掉。
propertyname="persistenceXmlLocation"value="classpath:persistence.xml">property>
propertyname="dataSource"ref="dataSource">property>
propertyname="jpaVendorAdapter">
BEANclass=org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter>
<property><span style="COLOR: #0000ff">="database"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="MYSQL"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="showSql"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="generateDdl"</span><span style="COLOR: #ff0000">value</span><span style="COLOR: #0000ff">="false"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #008000"><!--</span><span style="COLOR: #008000"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><propertyname="loadTimeWeaver"><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><bean<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></property></span><span style="COLOR: #008000">--></span><span style="COLOR: #000000"></span></span></span></property>
在persistence.xml文件中,添加如下的配置信息,开启Hibernate的二级缓存:
propertyname="hibernate.cache.use_query_cache"value="false">property><!--</span><span style="COLOR: #008000">暂时不开querycache</span><span style="COLOR: #008000">-->
3、在src目录下增加ehcache.xml,设置cache的配置信息,默认情况下可以考虑给一些常用的Entity类设置一个单独的cache区域,如下所示:
<!--</span><span style="COLOR: #008000">配置信息的说明如下:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />缺省缓存配置。CacheManager会把这些配置应用到程序中。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />下列属性是defaultCache必须的:<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /><br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />maxInMemory-设定内存中创建对象的最大值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />eternal-设置元素(译注:内存中对象)是否永久驻留。如果是,将忽略超<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />时限制且元素永不消亡。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToIdleSeconds-设置某个元素消亡前的停顿时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是在一个元素消亡之前,两次访问时间的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效(译注:如果对象永恒不灭,则<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />设置该属性也无用)。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />如果该值是0就意味着元素可以停顿无穷长的时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />timeToLiveSeconds-为元素设置消亡前的生存时间。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />也就是一个元素从构建到消亡的最大时间间隔值。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />这只能在元素不是永久驻留时有效。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />overflowToDisk-设置当内存中缓存达到maxInMemory限制时元素是否可写到磁盘<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" />上。<br /><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #008000">-->
4、然后修改Domain对象,对于要使用缓存的的Entity,在类声明前加上如下的标签:BR>@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE),此处usage的值还需要根据应用情况进行必要的调整。BR>P>P>5、暂时使用ehcache作为Springmodules的cache。在ehcache.xml文件中继续配置用于为spring提供方法调用结果的缓存。大致如下:
CACHEname="CMSCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
CACHEname="ECCache"maxelementsinmemory="5000"eternal="false"overflowtodisk="true"memorystoreevictionpolicy="LFU">CACHE>
6、然后在具体的Service类中配置缓存。使用了AOP,需要修改spring的配置文件,比如cms-core.xml中为了给ICmsManageService的get*方法添加结果缓存,调整如下:
<bean><span style="COLOR: #0000ff">=com.easyjf.cms.service.impl.CmsManageServiceImpl></span></bean>
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #ff0000">cachename</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="get*"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:CACHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #ff0000">methodname</span><span style="COLOR: #0000ff">="update*"</span><span style="COLOR: #ff0000">cachenames</span><span style="COLOR: #0000ff">="CMSCache"</span><span style="COLOR: #ff0000">when</span><span style="COLOR: #0000ff">="before"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">EHCACHE:FLUSHING</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"></span><span style="COLOR: #800000">EHCACHE:PROXY</span><span style="COLOR: #0000ff">></span></span></span></span></span></span></span></property>
调整前对照:
<property><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsAuthorDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDocDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsDirDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsSourceDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"><br><img alt="" src="http://www.blogjava.net/Images/OutliningIndicators/None.gif" align="top"></span><span style="COLOR: #0000ff"><span style="COLOR: #800000">property</span><span style="COLOR: #ff0000">name</span><span style="COLOR: #0000ff">="reviewDao"</span><span style="COLOR: #ff0000">ref</span><span style="COLOR: #0000ff">="newsRivewDao"</span><span style="COLOR: #0000ff">></span><span style="COLOR: #800000">property</span><span style="COLOR: #0000ff">></span><span style="COLOR: #000000"></span></span></span></span></span></property>
为了让Spring配置文件能识别并处理EHCACHE:XXX>这个标签,需要在beans中进行schem声明,如下所示:BR>另外在spring配置文件中再增加EHCACHE:CONFIGconfiglocation="classpath:ehcache.xml">EHCACHE:CONFIG>,以便Spring能找到Cache配置文件。EHCACHE:XXX>
7、以上只是基本的配置,cache运行的具体性能,还需要根据实际的数据量及并发量等进行更加细致的调整。
8、另外EasyJWeb还将会提供一个页面结果缓存,直接缓存Action的执行结果,这样就可以解决访问得最多,属于严重性能瓶颈的问题。比如ec-brand.ejf、index.ejf等。这一功能将在9月15号前推出。
9、一些必要的页面,需要增加静态文件生成功能。(逐渐调整)
由于发现Spring2.06版本与当前我们使用的版本存在一些冲突。而且跟EasyJWeb中的maven混合编译的时候存在一些问题,因此暂时取消使用Spring的方法Cache,而只使用Hibernate的Cache及EasyJWeb的缓存配合。EasyJWeb的缓存简单机制已经实现,直接在基于AbstractCmdAction的Action中,在要缓存的Command中使用缓存标签@WebCache即可。
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EasyJWeb实用开发指南——开始EasyJWeb
超级超值的东东哦,不下后悔哟
EasyJWeb是基于java技术,用于企业级Java Web应用程序快速开发的MVC框架。框架设计构思来源于国内众多项目实践,框架的设计及实现借鉴当前主要流行的开源Web框架,如Rails、Struts、JSF、Tapestry等,吸取其优点及...
easyjweb-2.0 java 快速开发 easyjweb-2.0 java 快速开发 easyjweb-2.0 java 快速开发
EasyJF开源网上会议系统iula是一个使用AJAX+EasyJWeb+EasyDBO及多线程技术技术开发的网上信息交流及互动系统,主要供EasyJF开源团队的成员网上会议使用,会议系统模拟传统的会议形式,可以同时开设多个不同主题的...
EasyJWeb是基于java技术,用于实现企业级Java Web应用程序快速开发框架。框架由来自国内的EasyJF开源团队维护,是一个完全由来自的中国开源爱好者开发,文档及注释全部为中文的开源框架。
EasyJWeb快速入门指南,EasyJWeb 是一个让你开发 Java Web 应用程序变得容易及高效的框架,他是一个基于请求转发模型的 MVC 框架。本章将主要介绍如何使用 EasyJWeb 写一个简单的应用程序。
EasyJWeb是基于java技术,用于企业级Java Web应用程序快速开发的MVC框架。框架设计构思来源于国内众多项目实践,框架的设计及实现借鉴当前主要流行的开源Web框架,如Rails、Struts、JSF、Tapestry等,吸取其优点及...
EasyJWeb框架0.7.0
目前EasyJWeb已经采用国际水准的项目管理工具——Maven。Maven是一个功能强大的项目管理工具,在此处不做过多介绍,有兴趣的可以阅读Maven官方文档。 首先要确保你的计算机上已经安装了Maven2.0.5以上版本,如果还...
配置easyjweb项目 ,要用到的细节,免于发生不必要的错误
EasyJWeb是基于java技术,能实现企业级Java Web应用程序快速开发的MVC框架。框架设计构思来源于国内众多项目实践,框架的设计及实现借鉴当前主要流行的开源Web框架(Rails、Struts、JSF、Tapestry),吸取其优点及...
easyjweb说明文档