CockroachDB, named for its resilience to failures, is designed to support high availability services by maintaining consistent and reliable operations even in adverse conditions. This is achieved through its Multi-Active Availability model, which requires a minimum of three nodes to establish consensus via the Raft protocol, ensuring data consistency and allowing the system to remain operational even if one node fails. To enhance failure tolerance, additional replicas can be introduced. The architecture allows any node to serve data for the entire cluster, facilitating robust deployment across multiple availability zones to withstand larger failures, such as those of an entire zone or data center. The article emphasizes the importance of strategically distributing data across zones using CockroachDB’s locality flag, and it offers guidance on deploying highly available services. Additionally, it points readers to a detailed guide on building consistent services with CockroachDB and invites those interested in distributed SQL systems to explore career opportunities with the company.