ConcurrentModification EHCache 多线程 Java

Question

我们有多个线程试图从 EHCache 获取，这有时会导致并发修改异常。我试过 Retryable 来解决这个问题，但它似乎没有做任何事情。有什么建议吗？

@Override
@Retryable(include= ConcurrentModificationException.class, backoff = @Backoff(delay = 5000, maxDelay = 3000), maxAttempts = 5)
public Object getFromCache(String cacheDomain, String cacheKey) {
    Object value = null;
    Cache cacheObject = getCacheObject();
    if (cacheObject != null) {
        StringBuilder fullCacheKey = new StringBuilder();
        fullCacheKey.append(cacheDomain);
        fullCacheKey.append("|");
        fullCacheKey.append(cacheKey);
        synchronized (cacheObject) {
            Element cacheElement = cacheObject.get(fullCacheKey.toString());
            if (cacheElement != null) {
                value = cacheElement.getObjectValue();
            }
        }
        log.debug("Value from Cache with key [" + fullCacheKey.toString() + "] is " + value);
    }
    return value;
}

Answer 1

我现在正在方法中进行深度复制以防止出现此错误。这可能会产生任何不可预见的后果吗？该方法只会从缓存中获取，所以我相信不会有任何影响

Element cacheElement = (Element) SerializationUtils.clone(cacheObject.get(fullCacheKey.toString()));

ConcurrentModification EHCache 多线程 Java

ConcurrentModification EHCache Multi Thread Java

java

spring

spring-boot

ehcache

concurrentmodification