This is remarkable in a few ways: Brotli can save up to 20% additional bandwidth as compared to Gzip and holy cow the Google Play Store handles a lot of bandwidth each day.
I look forward to this becoming available in mainstream webservers like Apache and Nginx.
As a software engineer at Google, Anamaria will be building upon the incredible impact she made as an intern on the Play team this past summer, when her work resulted in saving users an expected 1.5 petabytes (that’s 1.5 million gigabytes) of data each day.
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Brotli was initially launched in 2015, offering enhancements in generic lossless data compression, especially when used for HTTP compression. Its compression rates, speed, and memory usage have been continuously improved, and it has proven to be a powerful tool for app compression, generally outperforming GZIP.
Source: Google Student Blog: Intern Impact: Brotli compression for Play Store app downloads