You have a Standard Tier Memorystore for Redis instance deployed in a production environment.

To simulate a Redis instance failover in a production-like environment without impacting production data, the best approach is to use a development environment. Here’s why option D is the best choice:

Standard Tier Memorystore for Redis:

The Standard Tier provides high availability and automatic failover capabilities. It’s suitable for testing failover scenarios in a controlled environment.

Development Environment:

Using a development environment ensures that any potential data loss or impact from the failover simulation does not affect production data, maintaining the integrity and availability of the production system.

Limited-Data-Loss Mode:

The limited-data-loss mode for manual failover ensures that data loss is minimized during the failover process, making it a realistic simulation of a production failover scenario.

Steps to Implement:

Create a Development Environment:

Set up a development environment with a Standard Tier Memorystore for Redis instance that mirrors the configuration of your production instance.

Initiate Manual Failover:

Initiate a manual failover using the limited-data-loss data protection mode to simulate a failover scenario:

gcloud redis instances failover INSTANCE_ID --data-protection-mode=limited-data-loss

Verify Failover:

Monitor and verify the failover process to ensure it behaves as expected, simulating the disaster recovery scenario accurately.

Reference Links:

Memorystore for Redis Documentation

Manual Failover in Memorystore