# PostgreSQL Concepts

Generated on 16 Mar 2026

PostgreSQL is an open source, object-relational database built for extensibility, data integrity, and speed. Its concurrency support makes it fully ACID-compliant, and it supports dynamic loading and catalog-driven operations to let users customize its data types, functions, and more.

[Best Practices](https://docs.digitalocean.com/products/databases/postgresql/concepts/best-practices/index.html.md): Recommended practices to implement when setting up and running your PostgreSQL clusters.

[Optimize Shared Buffers](https://docs.digitalocean.com/products/databases/postgresql/concepts/shared-buffers/index.html.md): Check and set the `shared_buffers` parameter based on available memory to improve cache hit ratio and reduce disk access.

[Shared Responsibility Model](https://docs.digitalocean.com/products/databases/postgresql/concepts/responsibility-model/index.html.md): Description of DigitalOcean’s responsibilities as a managed database provider.

[Migration Strategies](https://docs.digitalocean.com/products/databases/postgresql/concepts/migration-strategies/index.html.md): Tips on how to transition to your new database upon migration.