Read replicas

Supabase Read Replicas allow you to deploy additional read-only databases that are kept in sync with your Primary database. This feature enhances performance, improves resource management, and reduces latency for global applications.

Key features

1. Load balancing: Distribute read operations across multiple databases, reducing load on the Primary.
2. Global deployment: Deploy replicas closer to users for reduced latency.
3. Dedicated endpoints: Each replica has its own database and API endpoints.
4. API load balancer: Automatically balance GET requests across all available endpoints.
5. Centralized configuration: Settings are propagated across all databases in a project.
6. Monitoring tools: Track replication lag and resource utilization through the Supabase Dashboard.

Benefits:

• Improved performance: Serve data from the nearest location, reducing response times.
• Increased availability: Distribute read traffic across multiple replicas for enhanced resilience.
• Scalability: Handle higher read loads by offloading queries to replicas.
• Data redundancy: Replicas provide additional copies of your data.
• Analytics support: Run resource-intensive queries on replicas without impacting production.

Read Replicas are particularly valuable for:

• Global applications serving users across different regions
• High-traffic websites with read-heavy workloads
• Real-time analytics dashboards requiring low-latency data access
• Applications needing to scale read capacity independently of write capacity

By leveraging Read Replicas, you can achieve consistent low-latency performance globally, improve application responsiveness for read operations, and enhance system reliability through better resource distribution and redundancy.