What are the main challenges a Postgres database administrator faces when managing large-scale databases?

One of the primary challenges for a Postgres Database Administrator managing large-scale databases is ensuring optimal performance while maintaining data integrity and security. As databases grow, tasks such as tuning queries, managing storage, and performing regular backups become more complex and time-consuming. Additionally, coordinating with development and operations teams to implement schema changes or troubleshoot issues requires strong communication skills. Staying up-to-date with the latest Postgres features and best practices is essential for efficiently handling these challenges.