This video shows the new Full Text Search feature in Couchbase Server 4.5.
This feature is a developer preview: It's not supported and it's not recommended for production (yet).
You can have a say in how the feature is implemented. Check out the SDK RFCs on GitHub, and feel free to ask questions or leave feedback.
If you'd like to learn more about how to use Couchbase, please visit our Couchbase Developer Portal.