Why Shopify entity ids increase by 4 every time when I create new entity?

Question

When I create pages with Shopify Api I noticed that id values increase by 4 every time I create new page.

For Example:

13911113, 13911117, 13911121...

I can't understand why they increase id values by four? Is there a good reason for doing that?

Answer 1

It's because of database sharding.