Cache
Avoid performing unnecessary operations by using cache mechanisms.
Context
Typically mobile apps present data to users that is collect from a remote server. However, it may happen that the same data is being collected from the server multiple times.
Solution
Implement caching mechanisms to temporarily store data from server. In addition, verify whether there is an update before downloading all data.
Example
Consider a social network app that shows other users' profiles. Instead of downloading basic information and profile pictures every time a given profile is opened, use data that was locally stored from earlier visits.
References
- - Android Developer Guides. Optimizing for Battery Life
- - Marion Gottschalk, Jan Jelschen, and Andreas Winter Saving Energy on Mobile Devices by Refactoring
Occurrences
- - https://github.com/Freeyourgadget/Gadgetbridge/commit/d1a62968f69ebb7dd6dd7cb273a06aa0761681a4
- - https://github.com/00-Evan/shattered-pixel-dungeon/commit/5491f315f6080f6ce9883638c5a7339c19a14828
- - https://github.com/k9mail/k-9/commit/43c38a047feedda4720af5bfbc188a33f8dfaced
- - https://github.com/federicoiosue/Omni-Notes/commit/9fe9db8d20f6323589026830e68927d8ad5c30d9
- - https://github.com/federicoiosue/Omni-Notes/commit/bd3c96f2e87553a6c5d5b1a70e7e5d9b4565c20b
- - https://github.com/fixme-lausanne/MyHackerspace/commit/d71df9b3962afaf38301dcef7199466281e7e48e
- - https://github.com/shadowsocks/shadowsocks-android/commit/179aab80942fb258ded3714d14d1fa1716fddce2