How App Standby Bucket will Work:
According to the reports, there will be five bucket sets that include active, working set, frequent, rare, and never. The active bucket set will allow the system to not impose any restrictions on the app placed in this set. For example, an app that is currently open or it is running as a foreground service can be categorized as active. The apps placed in the working set bucket will be subject to mild system restrictions. An app that runs often but it is currently inactive will be kept in working set bucket.
The apps in the frequent bucket set will be subjected to stronger restrictions. This set includes all the apps that may be used regularly but not daily. The apps that are not used often are placed in the rare bucket set which means they will be subjected to strict restrictions. The last set will include all the apps that are never used. These apps will be subjected to severe restrictions.