> For the complete documentation index, see [llms.txt](https://newdocs.keeper.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://newdocs.keeper.io/en/release-notes/backend/backend-api/backend-api-18.1.11.md).

# Backend API 18.1.11

Released October 8, 2026

### New Features

* No new user-facing features are included in this release. This is a targeted maintenance release focused on database connection stability, load distribution, and concurrency improvements.

### Bug Fixes

* **KA-7879:** Resolved a resource management issue during folder synchronization and permission updates. Prevents server resource exhaustion and ensures consistent system performance during heavy folder management activity.
* **KA-7980:** Fixed an issue where scheduled background maintenance jobs could run concurrently across multiple server instances. Eliminates database contention and ensures system maintenance tasks execute reliably without affecting platform responsiveness.
* **KA-9547:** Resolved database lock conflicts and transaction rollbacks during bulk updates of account security data. Improves platform write throughput and reduces intermittent request delays during peak activity periods.
* **KA-9601:** Fixed an uneven traffic distribution issue where read queries were disproportionately routed to specific database replicas. Ensures balanced workload distribution across all available database nodes to optimize query latency and prevent localized bottlenecks.
* **KA-9648:** Resolved connection pool exhaustion that caused incoming requests to hang and time out during periods of high concurrency. Optimized connection handling and retry behavior to ensure continuous platform availability and prevent request timeouts.

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