问题
What is the maximum amount of local memory (not Memcache) each instance of a Google App engine app is allowed to consume?
I couldn't find any information on the GAE quotas page.
回答1:
The maximum memory limit for an App Engine instance depends on the instance class that you choose. The default limit is 128 MB. The following classes are currently available:
- F1 and B1 - 128 MB
- F2 and B2 - 256 MB
- F4 and B4 - 512 MB
- F4_1G and B4_1G - 1024 MB
Edit: Second generation instances have double the memory:
- F1 and B1 - 256 MB
- F2 and B2 - 512 MB
- F4 and B4 - 1024 MB
- F4_HIGHMEM and B4_HIGHMEM - 2048 MB
- B8 - 2048 MB
回答2:
The maximum amount of local memory is not documented.
speculation:
I believe they have not imposed any hard limits because it may depend on your application traffic/load/activity and by other GAE applications.
There's an open issue MemoryError undocumented/hard to predict that you might want to star.
EDIT:
Reading the new Backends documentation here it seems capped to 128MB
来源：https://stackoverflow.com/questions/4232691/what-is-the-maximum-memory-a-google-app-engine-app-may-consume