What is CockroachDB?

CockroachDB is an open-source, distributed SQL database built with strong consistency and horizontal scalability in mind. It stands out for its:

  • Geo-replicated Architecture: Offers data distribution and replication across geographically dispersed regions, ensuring high availability and fault tolerance.

  • ACID Transactions: Guarantees Atomicity, Consistency, Isolation, and Durability for data integrity and reliability.

  • Horizontal Scalability: Scales linearly by adding more nodes to the cluster, handling growing data volumes and workloads efficiently.

  • SQL Compatibility: Uses familiar SQL syntax, making it easy for developers accustomed to relational databases to adopt.

Exploring the CockroachDB Codebase:

  • cockroach/: Core components of the CockroachDB server, including storage engine, distributed consensus, SQL parser, and more.

  • docs/: Documentation files covering various aspects of CockroachDB, including architecture, deployment, and usage.

  • tests/: Comprehensive test suite ensuring code quality and functionality.

  • tools/: Various tools for managing and interacting with CockroachDB clusters.

  • ui/: Code for the web-based user interface for administration tasks.

Key Features of CockroachDB:

  • Strong Consistency: Reads always return the latest write, even across geographically dispersed replicas.

  • Linear Scalability: Add more nodes to handle increasing data and workloads without performance bottlenecks.

  • ACID Transactions: Ensure data integrity and consistency across concurrent operations.

  • Schema Evolution: Evolve database schema online without downtime or data loss.

  • Global Tables: Access data seamlessly across geographically distributed clusters.

  • SQL Compatibility: Use familiar SQL syntax for querying and managing data.

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