It seems that Spring doesn’t allow you to provide a static text for the cache key in the SPEL, and it doesn’t include as default the name of the method on the key, so, you could be in a situation when two methods using the same cacheName and without a key would potentially cache different … Read more
The reason the code you have is not working is that @Cache is not intended to work that way. If you want to cache the results of a query method execution, the easiest way is to use Spring’s caching abstraction. interface PromotionServiceXrefRepository extends PagingAndSortingRepository<PromotionServiceXref, Integer> { @Query(“…”) @Cacheable(“servicesByCustomerId”) Set<PromotionServiceXref> findByCustomerId(int customerId); @Override @CacheEvict(value = “servicesByCustomerId”, … Read more
Use this class: http://static.springsource.org/autorepo/docs/spring/3.2.0.M1/api/org/springframework/cache/support/CompositeCacheManager.html like this: <cache:annotation-driven cache-manager=”cacheManager” /> <bean id=”cacheManager” class=”org.springframework.cache.support.CompositeCacheManager”> <property name=”cacheManagers”> <array> <ref bean=”cacheManager1″ /> <ref bean=”cacheManager2″ /> </array> </property> <property name=”addNoOpCache” value=”true” /> </bean>
One way is to place a ehcache.xml file on your classpath with the attribute updateCheck=”false” in the root tag. For example: <ehcache updateCheck=”false”> <defaultCache maxElementsInMemory=”0″ eternal=”false” timeToIdleSeconds=”0″ timeToLiveSeconds=”0″ overflowToDisk=”false” diskPersistent=”false”/> </ehcache> Another way is to set an environment variable: System.setProperty(“net.sf.ehcache.skipUpdateCheck”, “true”);
The non-singleton EhCacheRegionFactory allows you to configure EHCache separately for each Hibernate instance using net.sf.ehcache.configurationResourceName property. The SingletonEhCacheRegionFactory shares the same EHCache configuration among all Hibernate session factories. EHCache documentation recommends to use the non-singleton version. Edit: This information applies to EHCache 2.8. Not sure how many things have changed in the latest version.
EhCache comes with a failsafe configuration that has some reasonable expiration time (120 seconds). This is sufficient to get it up and running. Imports: import net.sf.ehcache.CacheManager; import net.sf.ehcache.Element; Then, creating a cache is pretty simple: CacheManager.getInstance().addCache(“test”); This creates a cache called test. You can have many different, separate caches all managed by the same CacheManager. … Read more
You can think Redis as a shared data structure, while Ehcache is a memory block storing serialized data objects. This is the main difference. Redis as a shared data structure means you can put some predefined data structure (such as String, List, Set etc) in one language and retrieve it in another language. This is … Read more
The Hibernate documentation does a pretty good job at defining them: 19.2.2. Strategy: read only If your application needs to read, but not modify, instances of a persistent class, a read-only cache can be used. This is the simplest and optimal performing strategy. It is even safe for use in a cluster. 19.2.3. Strategy: read/write … Read more
XML-less configuration of EhCache in Spring @Configuration @EnableCaching public class CachingConfig implements CachingConfigurer { @Bean(destroyMethod=”shutdown”) public net.sf.ehcache.CacheManager ehCacheManager() { CacheConfiguration cacheConfiguration = new CacheConfiguration(); cacheConfiguration.setName(“myCacheName”); cacheConfiguration.setMemoryStoreEvictionPolicy(“LRU”); cacheConfiguration.setMaxEntriesLocalHeap(1000); net.sf.ehcache.config.Configuration config = new net.sf.ehcache.config.Configuration(); config.addCache(cacheConfiguration); return net.sf.ehcache.CacheManager.newInstance(config); } @Bean @Override public CacheManager cacheManager() { return new EhCacheCacheManager(ehCacheManager()); } @Bean @Override public KeyGenerator keyGenerator() { return new SimpleKeyGenerator(); … Read more
This was caused by an IPv6 address being returned from java.net.NetworkInterface.getDefault(). I’m on a Macbook and was using wireless — p2p0 (used for AirDrop) was returned as the default network interface but my p2p0 only has an IPv6 ether entry (found by running ipconfig). Two solutions, both of which worked for me (I prefer the … Read more