Hash field expiration – Architecture and Benchmarks

Redis' Hash Field Expiration (HFE) feature offers improved performance, scalability, and resource efficiency compared to other solutions like TairHash and KeyDB. HFE enables active expiration of hash fields with minimal latency, allowing Redis to efficiently delete expired fields in the background. The ebuckets data structure, introduced as a potential replacement for the current EXPIRE implementation, provides significant benefits over traditional methods, including improved memory usage and support for adaptive expiration limits. Through extensive benchmarking, Redis demonstrates superior performance and scalability, making it an attractive choice for applications requiring efficient management of expiring fields within complex data types like hashes.