Announcing Redis 8.10: Compact Hash, JSONPath extensions, performance improvements, & more

Redis 8.10, now generally available in Redis Open Source, introduces efficiency, data-structure, query, and operational improvements aimed at large-scale deployments. Compact hash templates allow similarly structured hashes to share field names, reducing memory use by up to 50%, while HIMPORT can double bulk hash-loading throughput; additional optimizations improve hash writes and Stream reads and reduce memory use for deep Streams. Expanded JSONPath supports arithmetic, filtering, string and array functions, and aggregations, while Streams gain MAXCOUNT and MAXSIZE controls for bounding multi-stream read responses. New Set cardinality commands calculate union and difference sizes without retrieving members, Lists gain atomic multi-element movement options, and TimeSeries adds timestamp-grouped multi-series queries, blocking reads for incoming samples, and exclusion of empty results. The release also adds coordinated incremental backup and restore through new BACKUP commands, using staggered base snapshots and incremental AOF files to reduce CPU and memory spikes during Redis Cluster backups.

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