---
title: Scale PostgreSQL Clusters
description: Resize clusters, add standby and read-only nodes, and manage connection pools.
product: Databases
url: https://docs.digitalocean.com/products/databases/postgresql/how-to/scale-cluster/
last_updated: "2026-07-31"
---

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# Scale PostgreSQL Clusters

Generated on 1 Aug 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.

[How to Resize PostgreSQL Database Clusters](https://docs.digitalocean.com/products/databases/postgresql/how-to/resize/index.html.md): Change the size of your database cluster to accommodate your data needs.

[How to Add Standby Nodes to PostgreSQL Database Clusters](https://docs.digitalocean.com/products/databases/postgresql/how-to/add-standby-nodes/index.html.md): Add standby nodes to new or existing PostgreSQL database clusters for high availability.

[How to Add Read-Only Nodes to PostgreSQL Database Clusters](https://docs.digitalocean.com/products/databases/postgresql/how-to/add-read-only-nodes/index.html.md): Add read-only nodes to reduce latency for users in specific regions.

[How to Manage Connection Pools for PostgreSQL Database Clusters](https://docs.digitalocean.com/products/databases/postgresql/how-to/manage-connection-pools/index.html.md): Use connection pools to improve PostgreSQL database performance.