> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/vss/dev/system-components/middleware/database/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/vss/_mcp/server.

# Database

The database layer persists the analytics data produced by VSS, including behavior and metrics data, incidents, and verified results, so that services and agents can search and query it.

* [ELK](/system-components/middleware/database/elk) - Elasticsearch, Logstash, and Kibana: ingest from Kafka or Redis Streams, indexing, retention policies, and dashboards.

## Docs

- [ELK](https://docs.nvidia.com/vss/dev/system-components/middleware/database/elk.md):