educative.io

The example of Likes used for eventual consistency

How are the Likes aggregated? Say initially the post had 100 likes and then there was a like in Japan and a Like in Italy. So at that moment, the Asia shows 101 likes, Europe shows 101 Likes and Americas shows 100 likes. Eventually there should be 102 likes. Why does Europe and Asia region does not think they are already in sync with 101 likes and update the same to Americas and eventually ending up with 101 likes.

I believe the server would send a msg of the number of new likes?