{
  "id": "8-6",
  "title": "Redis 8.6 release notes and breaking changes",
  "url": "https://redis.io/docs/latest/operate/rc/changelog/version-release-notes/8-6/",
  "summary": "Release notes and breaking changes for Redis 8.6 on Redis Cloud.",
  "tags": [
    "docs",
    "operate",
    "rc"
  ],
  "last_updated": "2026-07-02T11:31:07-05:00",
  "page_type": "content",
  "content_hash": "44862786f3e1c06623a8419e40f9aa3e2f184fd9897fa10110ea12b115e349db",
  "sections": [
    {
      "id": "overview",
      "title": "Overview",
      "role": "overview",
      "text": "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)."
    },
    {
      "id": "known-limitations",
      "title": "Known limitations",
      "role": "content",
      "text": "When using Redis 8.6, be aware of these current limitations:\n\n- **Redis Search**: During load rebalancing operations (such as atomic slot migration), cursors may miss some results due to data movement between nodes.\n- **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."
    }
  ],
  "examples": []
}