Internal working of GAE Search API (Java)

Question

I would like to know how the Search API store Document internally? Does it store a Document into the Datastore with a "Document" kind? Or something else? Also where are indexes stored? In memcache?

Answer 1

Documents and indexes are stored in HR Datastore

Documents and indexes are saved in a separate persistent store optimized for search operations

The Document class represents documents. Each document has a document identifier and a list of fields.

The Document class represents documents. Each document has a document identifier and a list of fields.

It's all in Google's documentation