How have RabbitMQ and ClickHouse been used?

RabbitMQ was used as a message broker to organize asynchronous interaction between services. It provided reliable message delivery, load balancing, and system scalability.

ClickHouse was used as an analytical columnar database management system for storing and quickly analyzing large volumes of data. Thanks to its high query processing speed and support for OLAP operations, ClickHouse allowed for efficient execution of complex analytical queries in real-time.

For example, user event data was first published to RabbitMQ, from where consumers read messages and record aggregated data into ClickHouse for subsequent analysis and report generation.