Lakebase Postgres features a two-layer architecture that separates operations for durability and scalability. The compute layer uses standard Postgres for SQL parsing, query planning, and execution, designed to be ephemeral for dynamic scaling. The storage layer ensures correctness, durability, and historical accuracy, consisting of three components: Safekeepers replicate Write-Ahead Logging (WAL) records using a quorum-based protocol; Pageserver transforms WAL records into page versions; and Object Storage retains materialized versions and historical states in an immutable format. This architecture enhances data durability and system scalability.