是否有针对咖啡因缓存的CacheEntryExpiredListener? [英] Is there a CacheEntryExpiredListener for Caffeine Cache?

问题描述

我知道 Cache2k 具有一个 CacheEntryExpiredListener ，只有在缓存条目自到期时才触发(不是在显式失效时才触发).

I know Cache2k having a CacheEntryExpiredListener that is only triggered if a cache entry self-expires (not when being invalidated explicit).

 Cache<String, Object> cache = Cache2kBuilder.of(String.class, Object.class)
    .addListener(
        (CacheEntryExpiredListener<String, Object>) (cache, entry)
              -> handleExpired(entry.getKey(), entry.getValue()))
    .expireAfterWrite(60, TimeUnit.SECONDS)
    .build();

问题:如何使用 caffeine 缓存实现实现相同的目的?

Question: how could I achieve the same using caffeine cache implementation?

推荐答案

感谢@Ben Manes的提示:

Thanks to the hint from @Ben Manes:

Caffeine.newBuilder()
        .removalListener((key, value, cause) -> {
            if (cause.wasEvicted()) System.out.printf("key=%s, value=%s", key, value);
        })
        .expireAfterWrite(60, TimeUnit.SECONDS)
        .build();

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