This blog post explores the concept of template databases in PostgreSQL, specifically focusing on template0 and template1, which serve as the basis for creating new databases by simply copying them. The author highlights the utility of these templates in automating the process of adding extensions like uuid-ossp, which can streamline database creation by embedding such extensions into template1. This approach eliminates the need for repetitive installation of extensions each time a new database is created. Additionally, the post discusses a method for creating quick local backups using template databases, which offers a convenient alternative to more time-consuming pg_dump and pg_restore processes, although it is not suitable for production databases due to storage on the same physical hard drive. The article encourages readers to explore further readings and engage with the authors through various social media platforms.