CockroachDB

CockroachDB is a cloud-native, distributed SQL database. It survives disk, machine, rack, and even datacenter failures with zero downtime. It speaks PostgreSQL.

When to Use

• Global/Multi-Region Apps: "Geo-partitioning" ties data to specific locations for low latency and compliance (GDPR).
• Financial Ledgers: Strong consistency (Serializable Isolation) is the default.
• Serverless (2025): Use CockroachDB Serverless for auto-scaling from zero to millions of requests without managing nodes.

Quick Start

-- Create a table (Primary Key defaults to UUID in 2025 best practices)
CREATE TABLE accounts (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    balance DECIMAL(19,4)
);