google app engine - Datastore: Multiple writes against an entity group inside a transaction exceeds write limit?

Question

I'm familiar with Datastore's single-write-per-second limit (ok, 5, maybe) for entity groups. How does that square with transactions?

The docs seem to indicate that I can do multiple modifications inside a transaction- for example adding several descendant entities:

A single transaction can modify multiple entities in a single group, or add new entities to the group by making the new entity's parent an existing entity in the group.

https://cloud.google.com/appengine/docs/java/datastore/transactions

Answer 1

Waitting for answers