Forward Index Lookup
From Gcube Wiki
The ForwardIndexLookup Service is responsible receiving queries for the index, and returning responses that matches the queries. The ForwardIndexLookup gets a reference to the ForwardIndexManagement instance that is managing the index, when it is created. It can only query this index. Several ForwardIndexLookup instances may query the same index. The ForwardIndexLookup instances gets the index from Content Management, and establishes a local copy of the index on the file system that is queried. The local copy is kept up to date by subscribing for index change notifications that are emitted my the ForwardIndexManagement instance.
Read more on Index Management Framework architecture.