How does lucence index works internally

[aem-enthu27]

Hi,

I have read bunch articles on lucence index in AEM, like how to create and it is helpful in reducing traversal but still not able to understand, how these indexes works internally .

How does defining an index makes difference in traversal , what is the internal logic?

Thanks

Ganesh

[arunpatidar · Accepted solution]

An index contains keys built from one or more properties in the node. These keys are stored in a structure (B-tree) that enables JCR to find the node(s) associated with the key values quickly and efficiently.

[aem-enthu27]

index has it's own storage of our data so that whenever query is run it will search in taht storage first if not found then will come to jcr:content ?