CACHEMODEL: specifies how the most up-to-date info in subtables is saved during the cache. The default value is none. DURATION: specifies the time period contained in Each individual info file. Once the time specified by this parameter has elapsed, TDengine generates a completely new knowledge file to keep incoming details. https://charlieqmafg.bloguerosa.com/20149092/5-tips-about-tdengine-database-you-can-use-today