Exalead provides a comprehensive set of APIs allowing GN4 to push documents into the index database and to send search queries and retrieve search results.

GN4 automatically adds, updates and removes documents into Exalead index every time a GN4 object configured to be indexed is created, modified or deleted (undelete will add again document into index).

One Exalead index server can contain multiple sources. Every source contains multiple meta data handlers.

GN4 greatly extends this structure, allowing multiple GN4 object types to be embedded into the same source, and multiple GN4 attributes to be embedded into the same meta data handler. This architecture, merged with the capabilities of having multiple Exalead and GN4 instances, allows building extremely flexible, scalable and extensible configurations.

GN4 also queries Exalead index server with a HTTP/REST Request-Response procedure in order to retrieve, parse and display Exalead search results.

See Working with Exalead for further information.