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PostgreSQL PgBouncer Connection Pool Sizing.

DevOps simulator calculating the optimal max connection limit for PostgreSQL vs PgBouncer middleware based on max active workers, preventing memory starvation.

## Stop Crashing Your Database

Unlike MySQL, PostgreSQL forks a completely new OS process for every single client connection. This means having 2,000 active connections from serverless functions (like AWS Lambda) will consume gigabytes of RAM strictly maintaining idle connection states.

### FAQ

**Q: What does PgBouncer actually do?**
A: PgBouncer is a lightweight connection pooler. It accepts 2,000 incoming connections from your apps, but only funnels queries through a much smaller pool (e.g., 50) of real PostgreSQL connections down to the database. This eliminates memory overhead and terrifying CPU context-switching.