The text discusses an open-source bank simulation application built using Clojure, which has been modified to use Rust as a replacement. The application uses Apache Kafka for event sourcing and Confluent Schema Registry for schema management. The author compares the performance of the Clojure and Rust versions, measuring end-to-end latency and CPU/memory usage. The results show that Rust outperforms Clojure in terms of memory usage but has similar or slightly worse latency. The author concludes that Rust can be a viable alternative to Java applications using Kafka and Confluent Schema Registry.