Google App Engine Out Of Memory error - memory quota?

My Google App Engine application runs out of memory at about 100 MB. I need more. Looking at the list of quotas on my dashboard: https://appengine.google.com/dashboard/quotadetails I didn't find开发者_运维问答 anything about memory.

Is there a way to buy more memory allocation for my app?

it sounds like you need a "backend":

App Engine Backends are instances of your application that are exempt from request deadlines and have access to more memory (up to 1GB) and CPU (up to 4.8GHz) than normal instances. They are designed for applications that need faster performance, large amounts of addressable memory, and continuous or long-running background processes. [...] Backends share the handlers defined in app.yaml with the main application version.

http://code.google.com/appengine/docs/python/backends/overview.html#Billing_Quotas_and_Limits