Redis 7.0-rc3 Release Notes: New Features, Breaking Changes, Performance Improvements, CLI Updates, and Bug Fixes

Redis 7.0-rc3 has been released, bringing new features, potentially breaking changes, performance and resource utilization improvements, CLI tool updates, INFO field enhancements, module API changes, and numerous bug fixes.

New Features

CLUSTER SHARDS command deprecates CLUSTER SLOTS (#10293)

Potentially Breaking Changes

CONFIG GET responses return in nondeterministic order, affecting clients that rely on configuration order (#10323)

SORT / SORT_RO commands reject GET and BY key access patterns when ACL lacks full keyspace access (#10340)

FUNCTION LOAD command no longer accepts ENGINE and NAME parameters; DESCRIPTION parameter removed (#10500)

disable‑thp configuration becomes immutable (#10409)

Performance and Resource Utilization Improvements

Optimized replica performance and memory usage (#10413)

zslRandomLevel code using RAND_MAX is faster and more robust (#5539)

Changes in CLI tools

redis-cli now exits with code 1 on errors (#10468)

redis-cli performs DNS lookup before sending CLUSTER MEET (#10436)

redis‑benchmark fixes --cluster with IPv6 support (#10393)

redis-cli improves --json Unicode support and adds --quoted‑json (#10286)

INFO fields and introspection changes

MEMORY STATS now shows cluster.links memory usage (#10302)

Module API changes

Expose module configuration via CONFIG command (#10285)

Add event for notifying configuration changes (#10311)

Add API for editing command arguments from SLOWLOG and MONITOR (#10425)

RM_Call gains new flags for script‑mode compatibility, no‑write, and error replies (#10372)

Bug Fixes

Sentinel reconnects after auth‑pass change (#10400)

Cluster race condition on SETSLOT when becoming a replica fixed (#10489, #10381)

XREADGROUP unblocks client when stream key is deleted (#10306)

ACL DRYRUN no longer validates already‑validated command arguments (#10405)

ACL DRYRUN returns standard permission errors (#10359)

Correct hostname parsing from nodes.conf (#10435)

BITSET and BITFIELD SET propagate even when only length changes (#10459)

SHUTDOWN crash on shutdown fixed (#10440)

Scripts disallow potentially replicating commands when client pauses writes (#10364)

Optimized memory usage tracking for I/O threads (#10401)

redis-cli help and "?" now initialize help content (#10382)

Revoke COW of client output buffer as it is dynamic (#10371)

Fix memory corruption when EVAL fails before processing (#10519)