# Null ## Content # Null (data driver) Null data driver is the default when no data driver is configured. It discards payload writes and returns empty reads — useful for index-only setups where you want searchable trace metadata without storing the payload. ```ruby Trifle::Traces.configure do |config| config.index_driver = Trifle::Traces::Driver::Index::Mongo.new(mongo_client) # no data_driver: payloads are discarded, metadata is still searchable end ```