Redis

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Open-source, in-memory data structure store used as a database, cache, and message broker.

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Releases

Redis

8.6.2

1 week ago

Bug fixes

#14824 Potential UAF: don't use reply copy avoidance for module strings
#14848 Crash during command processing on replicas performing full synchronization
#14794 New XIDMPRECORD internal command and AOFRW emission to restore stream IDMP state
#14816 setModuleEnumConfig() passing prefixed name to module callbacks
#14858 Streams: Ensures XADD with IDMP/IDMPAUTO that hits an existing IID records the metadata change
#14855, #14831, #14817 Potential memory leaks
#14869 Streams: IDMP cron expiration not working after RDB load
#14847 Potential crash during ACL checks on wrong-arity commands
#14883 HSETEX, HGETEX do not validate that FIELDS is specified only once
#14897 Streams: IDMP-related bugs

Redis

7.2.13

1 month ago

SECURITY: There is a security fix in the release

Security fixes

A user can manipulate data read by a connection by injecting \r\n sequences into a Redis error reply

Redis

7.4.8

1 month ago

SECURITY: There is a security fix in the release

Security fixes

A user can manipulate data read by a connection by injecting \r\n sequences into a Redis error reply

Redis

8.0.6

1 month ago

SECURITY: There is a security fix in the release

Security fixes

A user can manipulate data read by a connection by injecting \r\n sequences into a Redis error reply

Redis

8.2.5

1 month ago

SECURITY: There is a security fix in the release

Security fixes

A user can manipulate data read by a connection by injecting \r\n sequences into a Redis error reply

Redis

8.4.2

1 month ago

SECURITY: There is a security fix in the release

Security fixes

A user can manipulate data read by a connection by injecting \r\n sequences into a Redis error reply

Redis

8.6.0

1 month ago

This is the General Availability release of Redis 8.6 in Redis Open Source.

Major changes compared to 8.4

Substantial performance improvements
Substantial memory reduction for hashes (hashtable-encoded) and sorted sets (skiplist-encoded)
Streams: XADD idempotency (at-most-once guarantee) with new IDMPAUTO and IDMP arguments
New eviction policies - least recently modified: volatile-lrm and allkeys-lrm
Hot keys detection and reporting; new command: HOTKEYS
TLS certificate-based automatic client authentication
Time series: support NaN values; new aggregators: COUNTNAN and COUNTALL

For more details, see the 8.6 release blog post.

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 8.6 on

Ubuntu 22.04 (Jammy Jellyfish), 24.04 (Noble Numbat)
Rocky Linux 8.10, 9.5
AlmaLinux 8.10, 9.5, 10.1
Debian 12 (Bookworm), Debian 13 (Trixie)
macOS 14 (Sonoma), 15 (Sequoia)

New Features (compared to 8.6-RC1)

#14695 Keys memory size histograms

Performance and resource utilization improvements (compared to 8.6-RC1)

#14714 Optimize user ACL permission verification
#14692 Optimize peak memory metric collection
#14739 Avoid allocating and releasing list node in reply copy avoidance
#14713 Reduce per command syscalls by reusing cached time when hardware monotonic clock is available
#14726 Optimize XREADGROUP CLAIM
#13962 Vector set: replace manual popcount with __builtin_popcountll for binary vector distance (Intel, AMD, ARM)
#14474 Vector set: vectorized the quantized 8-bit vector distance calculation (Intel, AMD)
#14492 Vector set: vectorize binary quantization path for vectorsets distance calculation (Intel, AMD)

Configuration parameters

#14719 cluster-slot-stats-enabled - per-slot resource consumptions statistics to collect
#14695 key-memory-histograms collect memory consumption histograms per data type

Metrics

#14695 db0_distrib_lists_sizes, db0_distrib_sets_sizes, db0_distrib_hashes_sizes, db0_distrib_zsets_sizes

known bugs and limitations

Streams: avoid using XADD with the new IDMP or IDMPAUTO options when using appendonly yes with aof-use-rdb-preamble no (non default). This limitation will be removed in the next patch.

Redis

8.4.1

1 month ago

Update urgency: SECURITY: There are security fixes in the release.

Security fixes

RedisTimeSeries/RedisTimeSeries#1837, RedisJSON/RedisJSON#1474 Hide Personally Identifiable Information from server log
RedisBloom/RedisBloom#936 Cuckoo filter: crash on RDB load on 0 buckets (MOD-11593)
RedisBloom/RedisBloom#945 Bloom filter: crash on RDB load on large number of filters (MOD-11590)

Bug fixes

#14637 Atomic slot migration: wrong adjacent slot range behavior
#14567 Atomic slot migration: support delay trimming slots after finishing migrating slots
#14746 CLUSTER SLOT-STATS: Fix few memory tracking bugs
RedisTimeSeries/RedisTimeSeries#1864 Atomic slot migration: time series limitations (MOD-13611)
RediSearch/RediSearch#6973 Correct empty string token counting in byteOffset calculations to ensure accurate text position tracking (MOD-11233)
RediSearch/RediSearch#6995 Prevent FT.INFO command fanout to replicas to reduce unnecessary cluster traffic
RediSearch/RediSearch#7154 Display Background Indexing OOM warning in FT.AGGREGATE when memory limits are approached (MOD-11817)
RediSearch/RediSearch#7219 Resolve concurrency issue in FT.AGGREGATEreducer that caused intermittent errors (MOD-12243)
RediSearch/RediSearch#7255 Correct BM25STD underflow wraparound to prevent incorrect scoring (MOD-12223)
RediSearch/RediSearch#7264 Ensure accurate totalDocsLen updates to maintain correct document statistics (MOD-12234)
RediSearch/RediSearch#7275 Report used memory as unsigned long to prevent overflow (RED-169833)
RediSearch/RediSearch#7350 FT.CREATE with LeanVec parameters on non-Intel architectures (RED-176382)
RediSearch/RediSearch#7371 Validate search-min-operation-workers min value correctly (MOD-12383)
RediSearch/RediSearch#7430 Prevent coordinator deadlock in FT.HYBRID queries by avoiding index read lock (MOD-12489)
RediSearch/RediSearch#7435 Ensure full profile output on timeout with RETURN policy in FT.PROFILE (MOD-12320)
RediSearch/RediSearch#7446 Remove outdated validation from debug aggregate in cluster mode (MOD-12435)
RediSearch/RediSearch#7455 Ensure internal cursors are deleted immediately in cluster mode (MOD-12493)
RediSearch/RediSearch#7458 Correct GC regression that caused stability issues (MOD-12538)
RediSearch/RediSearch#7460 Prevent potential double-free on error path in Fork GC (MOD-12521)
RediSearch/RediSearch#7499 Propagate HGETALL command in HDT mode (MOD-12662)
RediSearch/RediSearch#7534 Reduce number of worker threads asynchronously to prevent performance degradation (MOD-12252, MOD-11658)
RediSearch/RediSearch#7553 Handle WITHSCORES correctly when SCORE is sent alone without extra fields in coordinator (MOD-12647)
RediSearch/RediSearch#7560 Properly handle connection closing in IO thread at shutdown and fix searchRequestCtx freeing on error (MOD-12699)
RediSearch/RediSearch#7685 Resolve cursor logical leak that could lead to resource exhaustion (MOD-12807)
RediSearch/RediSearch#7710 Support for WITHCOUNT in FT.AGGREGATE (MOD-11751)
RediSearch/RediSearch#7794 Correctly handle binary data with embedded NULLs to prevent crashes (MOD-13010)
RediSearch/RediSearch#7812 Correct SVS GC for no-workers case (MOD-12983)
RediSearch/RediSearch#7815 Fix command routing in cluster mode by not relying on shard index (MOD-13049)
RediSearch/RediSearch#7823 Support vector blob only through parameter in FT.HYBRID(MOD-13123)
RediSearch/RediSearch#7873 Handle warnings in empty FT.AGGREGATE replies in cluster mode (MOD-12640)
RediSearch/RediSearch#7897 Remove asserts from DownloadFile to prevent crash (MOD-13096)
RediSearch/RediSearch#7901 Support multiple warnings in reply to prevent warning loss (MOD-13252)
RediSearch/RediSearch#7903 Eliminate memory leak in FT.HYBRID queries with Active-Active enabled (MOD-13143)
RediSearch/RediSearch#7886 Remove non-TEXT fields from spec's keys dictionary to prevent incorrect field handling (MOD-13150)
RediSearch/RediSearch#7905 Remove non-TEXT fields from spec's keys dictionary and refactor keys dict (MOD-13150, MOD-13151)
RediSearch/RediSearch#7978 Avoid using negative key position values during command registration (MOD-13332)
RediSearch/RediSearch#8052 Resolve incorrect results when using LOAD * with FT.HYBRID (MOD-12736, MOD-13556)
RediSearch/RediSearch#8083 Correct FULLTEXT field metric count accuracy (MOD-13432)
RediSearch/RediSearch#8089 Handle edge case in clusterset (MOD-13562)
RediSearch/RediSearch#8151 Correct FT.PROFILE shard total profile time calculation (MOD-13735, MOD-13181)
RediSearch/RediSearch#8153 Resolve config registration issue (RED-171841)
RediSearch/RediSearch#7449 Ensure FT.HYBRID respects timeout settings (MOD-11004)
RediSearch/RediSearch#7238 Initialize GIL_TIME properly for FT.PROFILE (MOD-12553)
RediSearch/RediSearch#7453 Error behavior on early bailout and split OOM warning for shard and coordinator (MOD-12449)
RediSearch/RediSearch#7615 Parameter numDocs from non-optimized Wildcard iterator (MOD-12392)
RediSearch/RediSearch#7165 (Redis Enterprise only) FT.DROPINDEX as touches-arbitrary-keys for proper cluster handling causing crash on A-A (MOD-11090)
RediSearch/RediSearch#7023 (Redis Enterprise only) Ensure all FT.SUG* commands are hashslot-aware to prevent cluster routing errors (MOD-11756)

Performance and resource utilization improvements

RediSearch/RediSearch#7496 Vector search performance improvements (MOD-12011, MOD-12063, MOD-12629, MOD-12346)
RediSearch/RediSearch#7519 Reduce number of worker threads asynchronously to improve resource utilization (MOD-12252, MOD-11658)
RediSearch/RediSearch#7694 Use asynchronous jobs in GC for SVS to reduce blocking (MOD-12668)
RediSearch/RediSearch#7730 Support filter_policy and batch_size parameters for vector similarity search tuning (MOD-13007, MOD-12371)
RediSearch/RediSearch#7782 Resolve SVS GC failures when worker threads are disabled (MOD-12983)
RediSearch/RediSearch#7572 Implement ASM state machine on notifications (MOD-12170)
RediSearch/RediSearch#7829 ASM-aware search flow for Active-Active deployments (MOD-12171, MOD-12169)
RediSearch/RediSearch#7589 Support multiple slot ranges in search.CLUSTERSET for flexible cluster topology updates (MOD-11657)
RediSearch/RediSearch#7862 Support subquery count in FT.HYBRID (MOD-11858, MOD-13146)
RediSearch/RediSearch#7893 Request policy support for cursor operations (MOD-13146, MOD-9573, MOD-8104)
RediSearch/RediSearch#8087 Warning when cursor may give inaccurate results due to Active-Active replication (MOD-12899)
RediSearch/RediSearch#7445 Remove outdated validation from Debug Aggregate in cluster mode (MOD-12435)
RediSearch/RediSearch#7384 Reduce index load from RDB temporary memory overhead (MOD-12212)

Metrics

RediSearch/RediSearch#7960 Persist query warnings across cursor reads (MOD-12984)
RediSearch/RediSearch#7612 Track maxprefixexpansions errors and warnings in info (MOD-12417)
RediSearch/RediSearch#7872 Handle warnings in empty FT.AGGREGATE replies in cluster mode (MOD-12640)
RediSearch/RediSearch#7900 Support multiple warnings in reply (MOD-13252)
RediSearch/RediSearch#7576 Track OOM errors and warnings in info (MOD-12418)
RediSearch/RediSearch#7507 Track timeout errors and warnings in info (MOD-12419)
RediSearch/RediSearch#7341 Rename FT.PROFILE counter fields for clarity (MOD-6056)
RediSearch/RediSearch#7436, RediSearch/RediSearch#7427 Enhance FT.PROFILE with vector search execution details (MOD-12263)
RediSearch/RediSearch#7573 Debug support for FT.PROFILE command (MOD-12627)
RediSearch/RediSearch#7736 Add Internal cursor reads metric to cluster FT.PROFILE output (MOD-12414)
RediSearch/RediSearch#7692 Declare query error struct on _FT.CURSOR PROFILE (MOD-12955)
RediSearch/RediSearch#7848 Store and display shard ID in profile output (MOD-12321)
RediSearch/RediSearch#7422 Track syntax and argument errors in query error metrics (MOD-12416)
RediSearch/RediSearch#7552 Add active_io_threads metric (MOD-12069, MOD-12695)
RediSearch/RediSearch#7622 Add active_coord_threads metric (MOD-12694, MOD-12069)
RediSearch/RediSearch#7564 Add active_worker_threads metric (MOD-12694, MOD-12069)
RediSearch/RediSearch#7626 Add *_pending_jobs metrics for job queues (MOD-12069)
RediSearch/RediSearch#7658 Add pending workers admin jobs metric (MOD-12069, MOD-12791)
RediSearch/RediSearch#7731 Add active_topology_update_threads metric (MOD-12069, MOD-12790)
RediSearch/RediSearch#7760 Extend indexing metrics for more detailed performance data (MOD-12070)

Configuration parameters

RediSearch/RediSearch#7083 Add default scorer configuration option (MOD-10037)

Redis

8.2.4

1 month ago

Update urgency: SECURITY: There are security fixes in the release.

Security fixes

RedisTimeSeries/RedisTimeSeries#1837, RedisJSON/RedisJSON#1474 Hide Personally Identifiable Information from server log

Bug fixes

RedisJSON/RedisJSON#1430 Malformed panic log messages (MOD-9365)
RedisBloom/RedisBloom#945 Bloom filter: crash on RDB load on large number of filters (MOD-11590)
RediSearch/RediSearch#6973 Correct empty string token counting in byteOffset calculations to ensure accurate text position tracking (MOD-11233)
RediSearch/RediSearch#6995 Prevent FT.INFO command fanout to replicas to reduce unnecessary cluster traffic
RediSearch/RediSearch#7034 Correct goto statement handling on RDB load
RediSearch/RediSearch#7154 Display Background Indexing OOM warning in FT.AGGREGATE when memory limits are approached (MOD-11817)
RediSearch/RediSearch#7219 Resolve concurrency issue in Reducer that caused intermittent errors (MOD-12243)
RediSearch/RediSearch#7255 Correct BM25STD underflow wraparound to prevent incorrect scoring (MOD-12223)
RediSearch/RediSearch#7264 Ensure accurate totalDocsLen updates to maintain correct document statistics (MOD-12234)
RediSearch/RediSearch#7275 Report used memory as unsigned long to prevent overflow (RED-169833)
RediSearch/RediSearch#7350 Allow FT.CREATE with LeanVec parameters on non-Intel architectures (RED-176382)
RediSearch/RediSearch#7384 Reduce index load from RDB temporary memory overhead (MOD-12212)
RediSearch/RediSearch#7435 Ensure full profile output on timeout with RETURN policy in FT.PROFILE (MOD-12320)
RediSearch/RediSearch#7446 Remove outdated validation from debug aggregate in cluster mode (MOD-12435)
RediSearch/RediSearch#7458 Correct GC regression that caused stability issues (MOD-12538)
RediSearch/RediSearch#7459 Prevent potential double-free in Fork GC error path (MOD-12521)
RediSearch/RediSearch#7470 Remove draining from Flush callback to avoid blocking
RediSearch/RediSearch#7499 Propagate HGETALL command in HDT mode (MOD-12662)
RediSearch/RediSearch#7534 Reduce number of worker threads asynchronously to prevent performance degradation (MOD-12252, MOD-11658)
RediSearch/RediSearch#7554 Handle Coordinator case when SCORE is sent alone without extra fields (MOD-12647)
RediSearch/RediSearch#7561 Prevent memory corruption when freeing searchRequestCtx on error (MOD-12699)
RediSearch/RediSearch#7685 Resolve cursor logical leak that could lead to resource exhaustion (MOD-12807)
RediSearch/RediSearch#7710 Add support for WITHCOUNT in FT.AGGREGATE (MOD-11751)
RediSearch/RediSearch#7794 Correctly handle binary data with embedded NULLs to prevent crashes (MOD-13010)
RediSearch/RediSearch#7812 Correct SVS GC for no-workers case (MOD-12983)
RediSearch/RediSearch#7873 Handle warnings in empty FT.AGGREGATE replies in cluster mode (MOD-12640)
RediSearch/RediSearch#7886 Remove non-TEXT fields from spec's keys dictionary to prevent incorrect field handling (MOD-13150)
RediSearch/RediSearch#7901 Support multiple warnings in reply to prevent warning loss (MOD-13252)
RediSearch/RediSearch#8083 Correct FULLTEXT field metric count accuracy (MOD-13432)
RediSearch/RediSearch#8153 Resolve config registration issue (RED-171841)
RediSearch/RediSearch#7371 Validate search-min-operation-workers min value correctly (MOD-12383)
RediSearch/RediSearch#8151 Correct FT.PROFILE shard total profile time calculation (MOD-13735, MOD-13181)
RediSearch/RediSearch#7165 (Redis Enterprise only) FT.DROPINDEX as touches-arbitrary-keys for proper cluster handling causing crash on A-A (MOD-11090)
RediSearch/RediSearch#7023 (Redis Enterprise only) Ensure all FT.SUG* commands are hashslot-aware to prevent cluster routing errors (MOD-11756)

Performance and resource utilization improvements

RediSearch/RediSearch#7496 Vector search performance improvements (MOD-12011, MOD-12063, MOD-12629, MOD-12346)
RediSearch/RediSearch#7694 Use asynchronous jobs in GC for SVS to reduce blocking (MOD-12668)

Metrics

RediSearch/RediSearch#7614 Track timeout errors and warnings in info (MOD-12419)
RediSearch/RediSearch#7646 Track maxprefixexpansions errors and warnings in info (MOD-12417)
RediSearch/RediSearch#7957 Persist query warnings across cursor reads (MOD-12984)
RediSearch/RediSearch#7341 Rename FT.PROFILE counter fields for clarity (MOD-6056)
RediSearch/RediSearch#7436 Enhance FT.PROFILE with vector search execution details (MOD-12263)
RediSearch/RediSearch#7737 Add Internal cursor reads metric to cluster FT.PROFILE output (MOD-12414)
RediSearch/RediSearch#7692 Declare query error struct on _FT.CURSOR PROFILE (MOD-12955)
RediSearch/RediSearch#7552 Add active_io_threads metric (MOD-12069, MOD-12695)
RediSearch/RediSearch#7564 Add active_worker_threads metric (MOD-12694, MOD-12069)
RediSearch/RediSearch#7623 Add active_coord_threads metric (MOD-12694, MOD-12069)
RediSearch/RediSearch#7626 Add *_pending_jobs metrics for job queues (MOD-12069)
RediSearch/RediSearch#7672 Add pending workers admin jobs metric (MOD-12069, MOD-12791)
RediSearch/RediSearch#7732 Introduce active_topology_update_threads metric (MOD-12069, MOD-12790)
RediSearch/RediSearch#7759 Extend indexing metrics for better observability (MOD-12070)

Configuration parameters

RediSearch/RediSearch#7083 Add default scorer configuration option (MOD-10037)

Redis

8.6-rc1

8.6-RC1

2 months ago

This is the first Release Candidate of Redis 8.6 in Redis Open Source.

Release Candidates are feature-complete pre-releases. Pre-releases are not suitable for production use.

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 8.6 on

Ubuntu 22.04 (Jammy Jellyfish), 24.04 (Noble Numbat)
Rocky Linux 8.10, 9.5, 10.1
AlmaLinux 8.10, 9.5, 10.1
Debian 12 (Bookworm), Debian 13 (Trixie)
14 (Sonoma), 15 (Sequoia)

New Features (compared to 8.4.0)

#14615 Streams: XADD idempotency (at-most-once guarantee) with new IDMPAUTO and IDMP arguments
#14624 New eviction policies - least recently modified: volatile-lrm and allkeys-lrm
#14680 Hot keys detection and reporting; new command: HOTKEYS
#14610 TLS certificate-based automatic client authentication
RedisTimeSeries/RedisTimeSeries#1853 Time series: support NaN values; new aggregators: COUNTNAN and COUNTALL

Security and privacy fixes

#14645 Hide Personally Identifiable Information from ACL log
#14659 ACL: Key-pattern bypass in MSETEX
RedisTimeSeries/RedisTimeSeries#1837, RedisJSON/RedisJSON#1474 Hide Personally Identifiable Information from server log
RedisBloom/RedisBloom#950 Out-of-bounds read when loading an invalid RDB file (MOD-12802)

Bug fixes (compared to 8.4.0)

#14545 ACL: AOF loading fails if ACL rules are changed and don't allow some commands in MULTI-EXEC
#14637 Atomic slot migration: wrong adjacent slot range behavior
#14567 Atomic slot migration: support delay trimming slots after finishing migrating slots
#14623 Streams: XTRIM/XADD with approx mode (~) don’t delete entries for DELREF/ACKED strategies
#14552 Streams: Incorrect behavior when using XDELEX...ACKEDafterXGROUP DESTROY`
#14537 SCAN: restore original filter order (revert change introduced in 8.2)
#14581 Rare server hang at shutdown
#14597 Panic when cluster node is uninitialized
#14583 FLUSHALL ASYNC on a writable replica may block the main thread for an extended period
#14504 Cluster: fix race condition in broadcast configuration
#14416 Fixed argument position handling in Redis APIs
RedisTimeSeries/RedisTimeSeries#1784, RedisTimeSeries/RedisTimeSeries#1839, RedisBloom/RedisBloom#952, RedisJSON/RedisJSON#1477 Atomic slot migration support
RedisBloom/RedisBloom#946 MEMORY USAGE: fix reported value (MOD-12799)
RedisJSON/RedisJSON#1473 Adding escapes to already-escaped characters (MOD-8137)
RedisJSON/RedisJSON#1475 JSON.CLEAR does not error if more than one path is specified (MOD-13109)

Performance and resource utilization improvements (compared to 8.4.0)

#14608 Reply copy-avoidance path to reduce memory copies for bulk string replies
#14595 Hash: unify field name and value into a single struct
#14701 Sorted set: unify score and value into a single struct
#14662 Optimize listpack iterator on hash fields
#14699 Optimize set commands with expiration
#14700 Optimize prefetching
#14715 Optimize prefetch sizing logic
#14636 Optimize ZRANK
#14676 Utilize hardware clock by default on ARM AArch64
#14575 Disable RDB compression when diskless replication is used

Modules API

#14445
- RM_CreateKeyMetaClass - define a new key-metadata class
- RM_ReleaseKeyMetaClass - release a key-metadata class
- RM_SetKeyMeta - attach or update a metadata value for a key under a specific metadata-key class
- RM_GetKeyMeta - get a metadata value for a key under a specific metadata-key class

Configuration parameters

#14624 maxmemory-policy: new eviction policies: volatile-lrm, allkeys-lrm
#14615 stream-idmp-duration, stream-idmp-maxsize - defaults for streams idempotent production
#14610 tls-auth-clients-user TLS certificate-based automatic client authentication
#14596 flushdb option for repl-diskless-load: always flush the entire dataset before diskless load

Metrics

#14610 acl_access_denied_tls_cert - failed TLS certificate–based authentication attempts

known bugs and limitations

Redis Query Engine: In case of load rebalancing operations (such as Atomic Slot Migration) taking place during the lifetime of a cursor, there is a chance that some results may be missing.

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