In terms of redundancy, how does Active-Active differ from Active-Passive Architecture?

Active-Active architecture is characterized by the use of multiple active nodes that can all handle requests simultaneously. This approach allows for load balancing, improved performance, and redundancy since each node can take over if one fails without interrupting service. This means that in an Active-Active setup, all active nodes share the workload, enhancing both availability and reliability.

The concept of redundancy is fundamental in Active-Active systems, as it ensures that service continues seamlessly, even in the event of a node failure. Since all nodes are functional at the same time, the system can maintain continuity and performance without reliance on a standby node.

In contrast, Active-Passive architecture involves one or more active nodes that handle the workload while one or more passive nodes remain on standby. The passive nodes do not participate in processing requests until a failure occurs in the active node. This setup can be less efficient, as the passive nodes are idle most of the time and only used when there’s a failure in the active node.

By utilizing multiple active nodes, Active-Active architecture enhances both redundancy and operational efficiency, which is why this option is the correct choice.