This is the first Milestone of Redis Community Edition 8.0.

Milestones are non-feature-complete pre-releases. Pre-releases are not suitable for production use. Once we reach feature-completeness we will release RC1.

Headlines:

Redis 8.0 introduces new data structures: JSON, time series, and 5 probabilistic data structures (previously available as separate Redis modules) and incorporates Redis scalable query engine (including vector search).

8.0-M01 is available as a Docker image and can be downloaded from Docker Hub. Additional distributions will be introduced in upcoming pre-releases.

Supported upgrade paths (by replication or persistence) to 8.0-M01

• From previous Redis versions, without modules

The following upgrade paths (by replication or persistence) to 8.0-M01 are not yet tested and will be introduced in upcoming pre-releases:

• From previous Redis versions with modules (RediSearch, RedisJSON, RedisTimeSeries, RedisBloom)
• From Redis Stack 7.2 or 7.4

New Features in binary distributions

• 7 new data structures: JSON, Time series, Bloom filter, Cuckoo filter, Count-min sketch, Top-k, t-digest
• Redis scalable query engine (including vector search)

Potentially breaking changes

• #12272 GETRANGE returns an empty bulk when the negative end index is out of range
• #12395 Optimize SCAN command when matching data type

Bug fixes

• #13510 Fix RM_RdbLoad to enable AOF after RDB loading is completed
• #13489 ACL CAT - return module commands
• #13476 Fix a race condition in the cache_memory of functionsLibCtx
• #13473 Fix incorrect lag due to trimming stream via XTRIM command
• #13338 Fix incorrect lag field in XINFO when tombstone is after the last_id of the consume group
• #13470 On HDEL of last field - update the global hash field expiration data structure
• #13465 Cluster: Pass extensions to node if extension processing is handled by it
• #13443 Cluster: Ensure validity of myself when loading cluster config
• #13422 Cluster: Fix CLUSTER SHARDS command returns empty array

Modules API

• #13509 New API calls: RM_DefragAllocRaw, RM_DefragFreeRaw, and RM_RegisterDefragCallbacks - defrag API to allocate and free raw memory

Performance and resource utilization improvements

• #13503 Avoid overhead of comparison function pointer calls in listpack lpFind
• #13505 Optimize STRING datatype write commands
• #13499 Optimize SMEMBERS command
• #13494 Optimize GEO* commands reply
• #13490 Optimize HELLO command
• #13488 Optimize client query buffer
• #12395 Optimize SCAN command when matching data type
• #13529 Optimize LREM, LPOS, LINSERT, and LINDEX commands
• #13516 Optimize LRANGE and other commands that perform several writes to client buffers per call
• #13431 Avoid used_memory contention when updating from multiple threads

Other general improvements

• #13495 Reply -LOADING on replica while flushing the db

CLI tools

• #13411 redis-cli: Fix wrong dbnum showed after the client reconnected

Notes

• No backward compatibility for replication or persistence.
• Additional distributions, upgrade paths, features, and improvements will be introduced in upcoming pre-releases.
• With the GA release of 8.0 we will deprecate Redis Stack.