This document discusses WePay's use of Kafka and Debezium for real-time data warehousing. Debezium is used to stream database changes from MySQL to Kafka. The Kafka Connect BigQuery connector then loads data from Kafka into BigQuery. This provides lower latency compared to WePay's previous ETL system. Key benefits include handling schema changes, retries on errors, and view deduplication in BigQuery. Future work includes integrating more of WePay's monolithic database and addressing issues like metrics and compatibility checking as the system scales.