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Batch Operations

Batch multiple operations instead of putting the device into an active state many times.

Context

1) Background tasks can be expensive. A given task needs to be eventually executed, but it does not need to be executed at a specific time. 2) Executing operations separately might lead to tail energy consumptions.

Solution

Bundle multiple operations in a single one.

Example

Use Job Scheduling APIs (e.g., `android.app.job.JobScheduler`, Firebase JobDispatcher) that manage multiple background tasks occurring in a device. These APIs will guarantee that the device will exit when there is a reasonable amount of work to do. It combines several multiple tasks to prevent the device from constantly exiting sleep mode (or doze mode). Other examples: execute only if another task is using the required resource; ask for location while setting 'notification responsiveness' with a reasonable delay; try to collect location data when other apps are collecting it as well.

References

• - Ding Li and William G. J. Halfond An Investigation into Energy-Saving Programming Practices for Android Smartphone App Development
• - Android SDK Documentation Optimizing for Doze and App Standby
• - Android SDK Documentation Android Developer Guides — Optimizing for Battery Life
• - Android Developers Youtube Channel. DevBytes: Efficient Data Transfers - Batching, Bundling, and SyncAdapters
• - Luis Corral, Anton B. Georgiev, Andrea Janes, and Stefan Kofler Energy-aware performance evaluation of Android custom kernels
• - Huaqian Cai, Ying Zhang, Zhi Jin, Xuanzhe Liu, and Gang Huang DelayDroid: Reducing Tail-Time Energy by Refactoring Android Apps

Occurrences

Android

iOS