Reading the Internals of PostgreSQL: Database Cluster, Databases, and Tables

Database Architecture, Database Systems, PostgreSQL Internals(buraksen.dev)view on HackerNews

PostgreSQLdatabase architecturedatabase internalsPostgresdatabase clusterstablespacesTOAST tablestuple writingtuple reading

Author: buraksen

Date: 6/29/2026

Article Summary:

A detailed article about the internal workings of PostgreSQL, covering topics such as database clusters, database objects, physical storage, tablespaces, TOAST tables, and tuple writing and reading.