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)

- #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)

- #14162 Crash when using evport with I/O threads
- #14163 `EVAL` crash when error table is empty
- #14144 Vector sets - RDB format is not compatible with big endian
machines
- #14165 Endless client blocking for blocking commands
- #14164 Prevent `CLIENT UNBLOCK` from unblocking `CLIENT PAUSE`
- #14216 TTL was not removed by the `SET` command
- #14224 `HINCRBYFLOAT` removes field expiration on replica

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

- #14200 Store iterators on stack instead of on heap
- #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

- #14051 `RedisModule_Get*`, `RedisModule_Set*` - allow modules to
access Redis configurations
- #14114 `RM_UnsubscribeFromKeyspaceEvents` - unregister a module from
specific keyspace notifications