Redis 8.6 release notes and breaking changes

Release notes and breaking changes for Redis 8.6 on Redis Cloud.

Redis 8.6 builds on the foundation of Redis 8.4 with significant enhancements to stream reliability, memory management, and security features. For more information on the changes in Redis 8.6, see What's new in Redis 8.6 and review the Redis Open Source 8.6 release notes.

Known limitations

When using Redis 8.6, be aware of these current limitations:

• Redis Search: During load rebalancing operations (such as atomic slot migration), cursors may miss some results due to data movement between nodes.
• Stream idempotency: Avoid using XADD with the new IDMP or IDMPAUTO options when using appendonly yes with aof-use-rdb-preamble no (a non-default configuration). This limitation will be removed in the next patch release.