This is the General Availability release of Redis Open Source 8.2.

Major changes compared to 8.0

• Streams - new commands: XDELEX and XACKDEL; extension to XADD and XTRIM
• Bitmap - BITOP: new operators: DIFF, DIFF1, ANDOR, and ONE
• Query Engine - new SVS-VAMANA vector index type which supports vector compression
• More than 15 performance and resource utilization improvements
• New metrics: per-slot usage metrics, key size distributions for basic data types, and more

Binary distributions

• Alpine and Debian Docker images - https://hub.docker.com/_/redis
• Install using snap - see https://github.com/redis/redis-snap
• Install using brew - see https://github.com/redis/homebrew-redis
• Install using RPM - see https://github.com/redis/redis-rpm
• Install using Debian APT - see https://github.com/redis/redis-debian

Operating systems we test Redis 8.2 on

• Ubuntu 22.04 (Jammy Jellyfish), 24.04 (Noble Numbat)
• Rocky Linux 8.10, 9.5
• AlmaLinux 8.10, 9.5
• Debian 12 (Bookworm)
• macOS 13 (Ventura), 14 (Sonoma), 15 (Sequoia)

Security fixes (compared to 8.2-RC1)

• (CVE-2025-32023) Fix out-of-bounds write in HyperLogLog commands
• (CVE-2025-48367) Retry accepting other connections even if the accepted connection reports an error

New Features (compared to 8.2-RC1)

• Add new KSN types - overwritten and type_changed #14141 Keyspace notifications - new event types:
  • OVERWRITTEN - the value of a key is completely overwritten
  • TYPE_CHANGED - key type change

Bug fixes (compared to 8.2-RC1)

• Fix crash due to incorrect event deletion of evport #14162 Crash when using evport with I/O threads
• Ensure empty error tables in scripts don't crash #14163 EVAL crash when error table is empty
• [Vector sets] Endianess fix and speedup of data loading #14144 Vector sets - RDB format is not compatible with big endian machines
• Only mark the client reprocessing flag when unblocked on keys #14165 Endless client blocking for blocking commands
• CLIENT UNBLOCK should't be able to unpause paused clients #14164 Prevent CLIENT UNBLOCK from unblocking CLIENT PAUSE
• handle SET KEEPTTL in the optimization path #14216 TTL was not removed by the SET command
• Fix HINCRBYFLOAT removes field expiration on replica #14224 HINCRBYFLOAT removes field expiration on replica

Performance and resource utilization improvements (compared to 8.2-RC1)

• Prefer storing iterators on stack instead of the heap #14200 Store iterators on stack instead of on heap
• [Vector sets] Endianess fix and speedup of data loading #14144 Vector set - improve RDB loading / RESTORE speed by storing the worst link info
• #Q6430 More compression variants for the SVS-VAMANA vector index
• #Q6535 SHARD_K_RATIO parameter - favor network latency over accuracy for KNN vector query in a Redis cluster (unstable feature) (MOD-10359)

Modules API

• Module set/get config API #14051 RedisModule_Get*, RedisModule_Set* - allow modules to access Redis configurations
• Add API to allow Redis modules to unsubscribe from keyspace notifications #14114 RM_UnsubscribeFromKeyspaceEvents - unregister a module from specific keyspace notifications