Crucial Exams

GCP Professional Data Engineer Practice Question

Your company runs a single-zone Basic Tier Memorystore for Redis instance that stores user session state for an online retail application. During a recent zone outage the cache became unavailable, causing all users to be logged out. Leadership wants an upgrade that:

  • survives a zonal outage inside the current region,
  • keeps data loss at zero or near-zero without application changes, and
  • fails over automatically in seconds while exposing the same connection endpoint. Which approach best meets the requirements with the least operational effort?

  • Upgrade the instance to Standard Tier in the same region so the service creates a cross-zone replica with synchronous replication and automatic failover on the same endpoint.

  • Deploy a self-managed Redis cluster on Compute Engine VMs inside a regional managed instance group with a TCP load balancer and custom failover scripts.

  • Create a second Basic Tier instance in another zone and modify the application to write to both instances using client-side sharding for redundancy.

  • Schedule exports of the cache to Cloud Storage every minute and restore to a new Basic Tier instance in a healthy zone by triggering a Cloud Function when an outage is detected.

GCP Professional Data Engineer
Maintaining and automating data workloads
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