OpenAI utilizes ClickHouse for its observability needs due to its ability to handle petabyte-scale data efficiently. The article highlights the advantages of ClickHouse, such as speed, scalability, and reliability, which are crucial for monitoring and analysis in large-scale AI operations. It discusses how these features support OpenAI's goals in data management and performance monitoring.

OpenAI relies heavily on PostgreSQL as the backbone for its services, necessitating effective scalability and reliability measures. The article discusses optimizations implemented by OpenAI, including load management, query optimization, and addressing single points of failure, alongside insights into past incidents and feature requests for PostgreSQL enhancements.