At BlaBlaCar, data teams are consuming 1 billion of events per day through Kafka created by backend and frontend teams. To enhance the reliability of our data pipelines, we're using data contracts to provide a standardized structure for our data. This closed the feedback loop between data producers and data consumers, massively improving the quality of the data inflow.

This talk will present how we set this organization in BlaBlaCar and what issues we could solve. Technologies involved: Kafka, Avro, BigQuery, OpenAPI, Java.