Unverified50% confidenceFactExact time
Redis 4.0引入LFU策略，使用Morris概率计数器以8位空间记录访问频次，并通过可配置的衰减因子（lfu-decay-time）避免历史热点数据长期占据内存
1
Sources
50%
Confidence
Long-term
Relevance
8/27/2026
First Seen
Sources
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