# Redis 8.6 release notes and breaking changes

```json metadata
{
  "title": "Redis 8.6 release notes and breaking changes",
  "description": "Release notes and breaking changes for Redis 8.6 on Redis Cloud.",
  "categories": ["docs","operate","rc"],
  "tableOfContents": {"sections":[{"id":"known-limitations","title":"Known limitations"}]}

,
  "codeExamples": []
}
```
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](https://redis.io/docs/latest/develop/whats-new/8-6) and review the Redis Open Source [8.6 release notes](https://redis.io/docs/latest/operate/oss_and_stack/stack-with-enterprise/release-notes/redisce/redisos-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.