Postgres, JSON and TOAST #database

Is this short part of big video? If yes can you share the video

This pointer and external page are also created when your row size exceeds the page size. Does this mean that there isn't a special case for JSON, and it's just the consequence of how large rows are handled?

Very relevant nuance, and well explained!

this pointer is like a memory offset in a page

This way of technic affect design of data model

Without any research I thought it was just stringified. So json in postgres isn’t just stringified but is actually another table internally?

How does this effect performance?

Quality content❤