Timbr’s caching engine uses a four-tier strategy that balances query speed and compute costs across different workload types. Tier 1 materializes data in the source database, Tier 2 caches in data lake storage, Tier 3 uses SSD for frequent access, and Tier 4 stores selected views in memory for real-time dashboards and high-frequency queries. Cached data is subject to the same role-based access, row-level security, and governance policies as live data.