Matrioska sync architecture

In most distributed architectures on the net, you have a problem.
How to maintain parity data between 2 components?
I have always used a method, refined over the years, which I called “Matryoshka”
The process, to align more components on the network is very simple.
Consider that you have a database in the X component and a Y component in

We define the X component that makes data acquisition (hardware local).
We define the Y component that needs to be updated with the data of X (Server).