SANGFOR IAM v2.1 User Manual1046.2.1.1. Basic Settings[Basic Settings] includes [Cache Time Settings] and [Other Settings], as shown below:[Shortest Update Interval: Check this option and configure the minimum interval the cache isupdated by the IAM gateway device. The IAM gateway device will not update the cached objectswithin this time interval even though they have been updated by the server; only after this timeinterval will the IAM gateway device update the cached objects if there are new requests for it.[Continue caching]: Check this item and configure the longest time the cached data will be cached.If it exceeds the time configured here, the corresponding cached data will be deleted to releasedisk space and memory space.