google app engine - Is there an Entity Group Max Size?

Question

I have an Entity that represents a Payment Method. I want to have an entity group for all the payment attempts performed with that payment method.

The 1 write-per-second limitation is fine and actually good for my use case, as there is no good reason to charge a specific credit card more frequently than that, but I could not find any specifications on the max size of an entity group.

My concern is would a very active corporate account hit any limitations in terms of number of records within an entity group (when they perform their 1 millionth transaction with us)?

Answer 1

Waitting for answers