Why PostgreSQL Vacuum Matters More Than You Think

Keeping PostgreSQL fast and stable is not just about good schema design or indexing. One of the most overlooked pillars of database health is the Vacuum process. It is easy to ignore because it operates quietly in the background, yet it is crucial for long-term performance, storage efficiency, and even preventing database outages.

In this article, I will walk through why Vacuum exists, what happens when it is neglected, and when it makes sense to tune or run it manually.