about mercure subscriber

[langziyang]

I have a question about Mercure: Suppose I have an Entity named Book. When I write a List page, this page displays 15 Books by default. Do I have to subscribe separately for these 15 data? Like new EventSource('/api/books/{id}') * 15? Can I just subscribe once on the list page new EventSource("/api/books")? So that when any Book changes, I can automatically update the List?