firebase - Maxing out document storage in Firestore

Question

I'm working on some posting forum projects and trying to figure out the ideal Firestore database structure. I read that documents have a max size of 1 mg but what are the pros and cons to maxing out the storage space of each document by having multiple posts stored in a document rather than using a single document for each post?

I think it would be cheaper. Assuming that the app would make use of all the data in a document, the bandwidth costs would be the same but rather than multiple reads, I would be charged for only one document. Does this make sense?

Would it also be faster?

Answer 1

Waitting for answers