Spring Boot sync caching with caffeine does not work

Question

I'm using Spring Boot 1.5.12.RELEASE, with caffeine 2.6.2 as caching provider.

I have a method in one of my services:

@Cacheable(cacheNames = [CacheService.MY_CACHE_NAME], sync = true)
fun fetchThing(id: Int, at: OffsetDateTime?): Thing? {
    LOGGER.debug("################### $id $at #############")

    // some network operation

    LOGGER.debug("################### $id $at IS DONE #############")

    return thing
}

I'd expect to see the first log only once, but if I call fetchThing again before the first call resolved, the value is computed two times:

09:18:34.657 [XNIO-2 task-11] DEBUG c.a.n.i.thing.ThingService - ################### 3140 null #############
09:18:34.673 [XNIO-2 task-12] DEBUG c.a.n.i.thing.ThingService - ################### 3140 null #############
09:18:36.025 [XNIO-2 task-11] DEBUG c.a.n.i.thing.ThingService - ################### 3140 null IS DONE #############
09:18:36.030 [XNIO-2 task-12] DEBUG c.a.n.i.thing.ThingService - ################### 3140 null IS DONE #############

If I call this function again I don't see any logs so the caching is working.

So it seems that sync is not working. Am I missing something?

EDIT: main class annotations:

@SpringBootApplication(exclude = [ElastiCacheAutoConfiguration::class])
@EnableSwagger2
@EnableScheduling
@EnableCaching
@EnableTransactionManagement
class Application

Maybe try reproducing in [spring-boot-sample-cache](https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples/spring-boot-sample-cache) with different Boot versions, to see if it was a bug. — Ben Manes, Apr 27 '18 at 04:31
seems `Caffeine` does not support `sync`. from `@Cacheable` doc: `actual cache provider that you are using may not support it in a synchronized fashion` — Vasyl Sarzhynskyi, Oct 09 '18 at 15:13
@VasiliySarzhynskyi. If that was the case, Ben Manes (creator of Caffeine) would have mentioned it in the previous comment. — Ritesh, Mar 11 '19 at 15:55
@Ritesh, agree with you, I later tested it with Caffeine and `sync` works fine. need to remove my previous comment — Vasyl Sarzhynskyi, Mar 11 '19 at 16:25
@Vasiliy Sarzhynskyi Which version of springboot and caffeine did works fine for you? — Jihun No, Sep 24 '19 at 07:37
@JihunNo I tested it with spring-boot `2.1.4.RELEASE` and caffeine `2.6.2` — Vasyl Sarzhynskyi, Sep 24 '19 at 09:51
@VasiliySarzhynskyi Thank you. I'd better to upgrade boot from 1 to 2. : ) — Jihun No, Sep 25 '19 at 06:40

score 0 · Answer 1 · answered Nov 15 '19 at 00:23

0

It is ridiculous, but... try to change the cache name.

I've just had the same problem and had no idea what's wrong in my config. So I've changed the name of the cache - it magically worked. So silly...

answered Nov 15 '19 at 00:23

Zefr

11
2

Spring Boot sync caching with caffeine does not work

1 Answers1