> WhatsApp used to use Erlang, not anymore. Facebook rewrote it completely in C++.
Highly doubt it. Here is Maxim Fedorov talking about scaling their cluster to 10000 nodes in 2018 https://www.youtube.com/watch?v=FJQyv26tFZ8 it would be pretty ridiculous for them to completely rewrite that in C++ one year later.
Highly doubt it. Here is Maxim Fedorov talking about scaling their cluster to 10000 nodes in 2018 https://www.youtube.com/watch?v=FJQyv26tFZ8 it would be pretty ridiculous for them to completely rewrite that in C++ one year later.