Except whatsapp at least used to run on Erlang, which definitely was pushing that kind of data. GC languages can have much better performance than non-GC langu

Except whatsapp at least used to run on Erlang, which definitely was pushing that kind of data. GC languages can have much better performance than non-GC languages (for many reasons, several of them mentioned here), and the main disadvantage being unpredictability. However, the unpredictability is not going to be problem for a chat application.