API Reference > presentation-backend > Core > PresentationManagerProps > workerConnectionCacheSize workerConnectionCacheSize workerConnectionCacheSize: undefined | number Each slot (see PresentationManagerProps.taskAllocationsMap) may open a worker connection to an iModel used for a request. This means there could be {slots count} * {iModels count} number of worker connections. Each worker connection uses a memory cache to increase iModel read performance. This parameter allows controlling the size of that cache. Defaults to 32768000 (32 MB). alpha Defined in presentation/backend/src/presentation-backend/PresentationManager.ts Line 253 Last Updated: 29 November, 2022