Maintaining database availability during growth requires strategies like replication, sharding, and failover mechanisms.

Replication Techniques

Synchronous and asynchronous replication keep copies of data across multiple nodes.

Replication enhances fault tolerance and read scalability.

Database Sharding

Sharding partitions data by keys to distribute load among servers.

Sharding complexity requires careful schema and application design.

Failover and Recovery

Automatic failover detects and recovers from node failures to minimize downtime.

Backup strategies support data integrity after incidents.

Monitoring Performance

Use metrics such as query latency, replication lag, and connection counts to monitor health.

Alerts facilitate proactive maintenance.