For all I know,
The lineariable coherence model is a Data centric and strong consistency model.
Data centric means:
– All customers experience the consistency
– All clients access the same data store
– All customers are subject to the same order
– Non-mobile customers. That is to say. replica used does not change. That is to say. replicas are not affected by synchronization delays.
– Operations on shared data are synchronized
this link has a good and easy to follow example. But, I'm confused on one thing.
In the first image,
it only shows one data store.
But, in the second picture,
it shows two data stores.
Why is that?
Is not it possible to show the example with only one data store in the second case?