App updates on Android are smaller. It reports the operating system on its developer blog. By the use of a new update process is Google to updates of applications on average 65 percent smaller.

App updates in the past

Previously downloaded the Android app updates of an application the entire app again. But with this new technology sends Google Play a patch that makes sure that the operating system only the differences download. Google compares it yourself with the correct of a book. If you use one sense to change, it is also easier to get that one sentence to change the whole book to write it again.

Deflate change code too much

most Android apps are APK’s. That are ZIP-files with special properties. These ZIP-files are compressed with a technology that Deflate is called. That compresses the data well, but makes the identification of changes in the original file very difficult. Google makes the following gif clearly. It changes one letter in a text and lets see what that with the code from the compressed files.

App updates

up To 6 petabytes databesparing per day

Therefore, goes Android with the new technique, changes in the original, uncompressed data. This is a update according to the blog on average 65 percent smaller. In some cases, this rises to more than 90 percent. That saves according to Google per day to 6 petabytes, or 6000 terabytes per day.

Source: Android Developers via NU.nl