Hash Field Expiration (HFE) is a new feature in Redis Community Edition and Stack 7.4, designed to improve memory efficiency and scalability. Benchmarks show Redis outperforms competitors like Alibaba's KeyDB and Snap’s TairHash, consuming less memory and maintaining high throughput even with up to 10 million HFEs. Redis utilizes the innovative ebuckets data structure for effective active expiration and minimal server impact, positioning it as a superior solution for managing memory and complex data types.
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