caffeine报OutOfMemoryError: unable to create new native thread #989
Description
请较一下大佬，是否见过运行时报异常java.lang.OutOfMemoryError: unable to create new native thread，应该如何处理？
详细堆栈
2025-09-29 15:08:20,695 1158228 [http-nio-0.0.0.0-8080-exec-12] WARN c.g.b.c.cache.BoundedLocalCache com.github.benmanes.caffeine.cache.BoundedLocalCache:1434 - Exception thrown when submitting maintenance task
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:719)
at java.util.concurrent.ForkJoinPool.createWorker(ForkJoinPool.java:1486)
at java.util.concurrent.ForkJoinPool.tryAddWorker(ForkJoinPool.java:1517)
at java.util.concurrent.ForkJoinPool.signalWork(ForkJoinPool.java:1634)
at java.util.concurrent.ForkJoinPool.externalPush(ForkJoinPool.java:2414)
at java.util.concurrent.ForkJoinPool.execute(ForkJoinPool.java:2648)
at com.github.benmanes.caffeine.cache.BoundedLocalCache.scheduleDrainBuffers(BoundedLocalCache.java:1432)
at com.github.benmanes.caffeine.cache.BoundedLocalCache.getIfPresent(BoundedLocalCache.java:1930)
at com.github.benmanes.caffeine.cache.LocalManualCache.getIfPresent(LocalManualCache.java:57)
at com.alicp.jetcache.embedded.CaffeineCache$2.getValue(CaffeineCache.java:67)
at com.alicp.jetcache.embedded.AbstractEmbeddedCache.do_GET(AbstractEmbeddedCache.java:53)
at com.alicp.jetcache.AbstractCache.GET(AbstractCache.java:87)
at com.alicp.jetcache.MultiLevelCache.do_GET(MultiLevelCache.java:88)
at com.alicp.jetcache.AbstractCache.GET(AbstractCache.java:87)
at com.alicp.jetcache.AbstractCache.computeIfAbsentImpl(AbstractCache.java:137)
at com.alicp.jetcache.AbstractCache.computeIfAbsent(AbstractCache.java:112)
at com.alicp.jetcache.Cache.computeIfAbsent(Cache.java:311)
at com.alicp.jetcache.SimpleProxyCache.computeIfAbsent(SimpleProxyCache.java:93)
at com.alicp.jetcache.anno.method.CacheHandler.invokeWithCached(CacheHandler.java:245)
at com.alicp.jetcache.anno.method.CacheHandler.doInvoke(CacheHandler.java:92)
at com.alicp.jetcache.anno.method.CacheHandler.invoke(CacheHandler.java:84)
at com.alicp.jetcache.anno.aop.JetCacheInterceptor.invoke(JetCacheInterceptor.java:74)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:241)
at com.sun.proxy.$Proxy161.getSyResMap(Unknown Source)
at com.demo.ResTypeManager.getResource(ResTypeManager.java:51)
对应代码是调用了添加了缓存注解的getSyResMap
public interface ISyResQueryService extends IBaseService {
/**
* 二级缓存时间
*/
int CACHE_SECONDS = 600;
/**
* 一级缓存时间
*/
int LOCAL_CACHE_SECONDS = 30;
@Cached(name = "common:", key = "'resmap'", expire = CACHE_SECONDS, localExpire = LOCAL_CACHE_SECONDS, cacheType = CacheType.BOTH, localLimit = 10)
Map<String, Boolean> getSyResMap();
}
使用配置
jetcache:
areaInCacheName: false
hidePackages: com.alibaba
local:
default:
expireAfterWriteInMillis: 100000
keyConvertor: fastjson
limit: 100
type: caffeine
remote:
default:
uri: redis://${spring.redis.password}@${spring.redis.host}:${spring.redis.port}/${spring.redis.database}
password: ${spring.redis.password}
type: redis.lettuce
keyConvertor: fastjson
poolConfig:
maxIdle: 20
maxTotal: 50
minIdle: 5
valueDecoder: kryo
valueEncoder: kryo
statIntervalMinutes: 15网上一种说法是caffeine的默认是使用ForkJoinPool， 当用于处理 IO 密集型任务，因为 IO 阻塞会让线程长期闲置但不释放，迫使池不断创建新线程。当线程数量超过操作系统的线程上限（如用户级限制 ulimit -u 或系统全局限制），就会触发 unable to create new native thread
错误。但我不知道对不对
而这个caffeine对象是jetcache创建的，本身没有指定线程池的配置项，因而导致创建的caffeine都是默认ForkJoinPool。
请大佬帮忙看看，原因是什么，应该如何解决？