Validated on February 14, 2019 •
Posted on February 14, 2019
Managed Databases: Managed databases refers to the entire service offered by DigitalOcean.
Database Cluster: The cluster itself consists of a primary node and its standby nodes.
Primary Node: Only the primary node is actively written to at any time. It serves as the single source of data for all other node types.
Standby Node: Standby nodes maintain a constant copy of the primary node and can automatically take over as primary if the primary node ever fails.
Read-only Node: Read-only nodes maintain a constant copy of the primary node and can exist in another datacenter region, allowing much faster read access for globally distributed clients.
Backend Connection: The connection between a connection pool and a database cluster.
Client Connection: The connection between a database client and a connection pool or directly to a database cluster.
Forking: Forking a database cluster rewinds that cluster’s transactions to a specific point in time, then creates a new cluster from that point.
High Availability: High availability means a service is resilient to failure and has safeguards to prevent extended downtime. The managed cluster becomes highly available when you add at least one standby node.