What is providetag id?

[tytom2003]

why providetag will using id? such as, [{type: 'Post', id}]. what is id? The id is a virtual unique number for cach each record like sql primary key
?
i read website provietag still not understand providetag id.
Thank you very much.

[markerikson]

See https://redux.js.org/tutorials/essentials/part-8-rtk-query-advanced#invalidating-specific-items

[tytom2003]

The id is make data invalidates for mutation? The id for each cache data? [{ type: "Post", id }] is specific cache data?