13 January, 2010

What is Memcahe Entries?

One part of the new Test Subsystem. I need to design the Memcache Entries for the system.

From book 'Developing with Google App Engine', Chapter 7, Memcache and Session Data, it shows:

What Is Memcache?
Memcache is a service that provides a key-value caching mechanism for
efficient in-memory data retrieval across multiple instances of an App
Engine application. The Memcache API enables
􀂃 A reduction in the number of Datastore queries
􀂃 A reduction in the Datastore quota usage for popular pages
􀂃 Caching of expensive query results
􀂃 Implementation of transient counters
Data in Memcache are available to every instance of an application and
only discarded due to cache exhaustion.

Checked the book ' Using Google App Engine ', Chapter 11- Memory Cache, P193-P203.

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