# Databases

Client-side in-memory table cache using ConcurrentDictionary for offline/fast data access.

## Key Files

- **`DatabaseClient.cs`** — (~250 lines) Local client-side database with typed tables (Shipping, ShippingDocument, ShippingItem, etc.). ProductDtoTable and OrderDtoTable with semaphore-based async loading. DatabaseTableBase<T> generic base. ObjectLock for thread-safe type-based locking. LoadingPanelVisibility global flag.