Aurora Connection Management

Aurora involves a cluster of DB instances instead of a single instance.
Each connection is managed by a specific DB instance.
During connection to Aurora, host name and port point to endpoint.
endpoint mechanism abstracts these connections.
Hence, no need to hardcode hostnames or logic for load-balancing and rerouting connections if DB instances aren’t available.
With endpoints, map each connection to appropriate instance or group of instances based on use case.
endpoint is represented as an Aurora-specific URL having
- a host address
- a port.
Aurora Endpoints Types
- Cluster endpoint – connects to the current primary DB instance for that DB cluster. Each Aurora DB cluster has one cluster endpoint and one primary DB instance.
- Reader endpoint – connects to one of the available Aurora Replicas for that DB cluster. Each Aurora DB cluster has one reader endpoint.
- Custom endpoint – It represents a set of DB instances that you choose. After connecting, Aurora performs load balancing.
- Instance endpoint – connects to a specific DB instance within an Aurora cluster.