Java Reference
In-Depth Information
Here's some more information on how the Images service calculates the
measurements for the quotas described in Table 2-8.
•
Image Manipulation API Calls
: The total number of times the
application accesses the Images service.
•
Data Sent to API
: The amount of data sent to the Images service.
Because this is internal to App Engine, this metric does not
consume Outgoing Bandwidth.
•
Data Received from API
: The amount of data received from the
Images service.
•
Transformations executed
: The number of times the service has
performed a transformation on an image for the application.
Transformations include resizing, rotating, flipping, and cropping
images. Other more advanced transformations are included in this
metric as well.
Memcache
Sometimes it's more efficient for your application to create an in-memory data cache
for persistent storage across some tasks. Memcache serves this purpose for App
Engine applications. Table 2-9 outlines the quota measurements for the Memcache
service.
Table 2-9. App Engine Quotas for the Memcache Service
Resource
Daily Limit
(Free)
Maximum Rate
(Free)
Daily Limit
(Billing
Enabled)
Maximum Rate
(Billing Enabled)
Memcache API Calls
8.6M
48,000 calls /
min
96M
108,000 calls /
min
Data Sent to API
10GB
56MB / min
60GB
128MB / min
Data Received from API
50GB
284MB / min
315GB
640MB / min
