eh-cache with grails 3

Question

Ehcache isn't working properly in my project. I run grails 3.3.1 "with org.grails.plugins:cache-ehcache:3.0.0.M1" and since i dont know where to put the ehcache.xml file and how the file should look like i tried to configure ehcache programmaticially

I created a cacheService with a methode "initCaches" which i run from my bootstrap.groovy

class CacheService {
void initCaches() {       
    CacheManager cacheManager = CacheManagerBuilder.newCacheManagerBuilder()
        .withCache("sevenSeconds", CacheConfigurationBuilder.newCacheConfigurationBuilder(Long.class, String.class, ResourcePoolsBuilder.heap(10))
            .withExpiry(Expirations.timeToLiveExpiration(Duration.of(7, TimeUnit.SECONDS)))
        )
        .withCache("twentySeconds", CacheConfigurationBuilder.newCacheConfigurationBuilder(Long.class, String.class, ResourcePoolsBuilder.heap(10))
            .withExpiry(Expirations.timeToLiveExpiration(Duration.of(20, TimeUnit.SECONDS)))
        )
        .build()  
    cacheManager.init()
}
}

When I start the application the console says that the caches have been created:

2018-06-26 15:47:31.302  INFO --- [           main] org.ehcache.core.EhcacheManager          : Cache 'sevenSeconds' created in EhcacheManager.
2018-06-26 15:47:31.310  INFO --- [           main] org.ehcache.core.EhcacheManager          : Cache 'twentySeconds' created in EhcacheManager.

Now I access a service method which is annotated with @Cacheable("sevenSeconds") and there comes the part which is confusing me: Again the console says, that the cache has been created (instead of putting the result into the old already out of CacheService created one):

2018-06-26 15:47:31.302  INFO --- [           main] org.ehcache.core.EhcacheManager          : Cache 'sevenSeconds' created in EhcacheManager.

If i access the service again with same parameters a cached result will returned BUT the timeToLive is NOT 7 seconds like I created the cache in my CacheService.

It looks like @Cacheable doesn't consider my created caches in CacheService

Does anybody know what I am doing wrong?

thx

score 0 · Answer 1 · answered Jun 30 '18 at 03:44

0

I don't know how Grails manage the CacheService and how initCaches is called. However, your CacheManager is a local variable. So I would expect it to be garbage collected at the end of initCaches.

@Cacheable is probably using some other CacheManager. So that's what you should fix by making the CacheManager created in initCaches available to Grails expected convention.

answered Jun 30 '18 at 03:44

Henri

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so the scope is different between creating the cache via ehcache.xml and the programmaticial way? – pebbles Jul 02 '18 at 09:39
The scope? I am talking about the `cacheManager` variable. Its scope is local to the method. – Henri Jul 02 '18 at 17:31
well i haven't found a way to make the programaticially created cacheManager global. so i configured the cacheManager via xml file – pebbles Jul 09 '18 at 10:59

eh-cache with grails 3

1 Answers1