The article author shares their two-year experience self-hosting PostgreSQL databases, pointing out that cloud database service providers have promoted the narrative that ‘database hosting is dangerous’ over the past decade, when in reality most cloud hosts simply run slightly modified open-source Postgres servers. The author provides a detailed comparison of the pros and cons of self-hosting versus cloud database services, including cost, performance, reliability, and operational complexity. The article offers specific PostgreSQL configuration parameters and optimization recommendations, including memory configuration, connection management, storage optimization, and WAL configuration. Through actual migration experience, the author demonstrates that self-hosting PostgreSQL is not only more cost-effective (saving hundreds of dollars monthly) but also provides better performance and greater control. The article concludes that while self-hosting may not be the best choice for all scenarios, it’s a worthwhile option for most teams to consider under specific conditions.
