This is the second 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:

8.0-M02 introduces significant performance improvements. Both Alpine and Debian Docker images are now available on Docker Hub. Additional distributions will be introduced in upcoming pre-releases. In addition, Redis Query Engine now supports both horizontal and vertical scaling for search, query and vector workloads.

Supported upgrade paths (by replication or persistence) to 8.0-M02

• From previous Redis versions, without modules

The following upgrade paths (by replication or persistence) to 8.0-M02 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

Security fixes

• (CVE-2024-31449) Lua library commands may lead to stack overflow and potential RCE.
• (CVE-2024-31227) Potential Denial-of-service due to malformed ACL selectors.
• (CVE-2024-31228) Potential Denial-of-service due to unbounded pattern matching.

Bug fixes

• #13539 Hash: Fix key ref for a hash that no longer has fields with expiration on RENAME/MOVE/SWAPDB/RESTORE
• #13512 Fix TOUCH command from a script in no-touch mode
• #13468 Cluster: Fix cluster node config corruption caused by mixing shard-id and non-shard-id versions
• #13608 Cluster: Fix GET # option in SORT command

Modules API

• #13526 Extend RedisModule_OpenKey to read also expired keys and subkeys

Performance and resource utilization improvements

• #11884 Optimize ZADD and ZRANGE* commands
• #13530 Optimize SSCAN command in case of listpack or intset encoding
• #13531 Optimize HSCAN/ZSCAN command in case of listpack encoding
• #13520 Optimize commands that heavily rely on bulk/mbulk replies (example of LRANGE)
• #13566 Optimize ZUNION[STORE] by avoiding redundant temporary dict usage
• #13567 Optimize SUNION/SDIFF commands by avoiding redundant temporary dict usage
• #11533 Avoid redundant lpGet to boost quicklistCompare
• #13412 Reduce redundant call of prepareClientToWrite when call addReply* continuously

Notes

• 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.