对咖啡因缓存的CacheEntryExpiredListener

对咖啡因缓存的CacheEntryExpiredListener

本文介绍了是否有针对咖啡因缓存的CacheEntryExpiredListener?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

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();

这篇关于是否有针对咖啡因缓存的CacheEntryExpiredListener?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-20 21:41