You created a Memorystore Redis instance but your app cannot connect. Which is the most likely cause?

medium📝 Debug Q14 of 15

GCP - Cloud Firestore and Bigtable

AThe Redis instance is in a different VPC network than the app

BThe Redis instance size is too small

CThe Redis instance region is the same as the app

DThe Redis instance is running the wrong Redis version

Step-by-Step Solution

Solution:

Step 1: Identify common connectivity issues
Memorystore requires the app and Redis instance to be in the same VPC or connected networks.
Step 2: Evaluate options
The Redis instance is in a different VPC network than the app correctly identifies network mismatch causing connection failure. Size, region, or version mismatches do not block connection.
Final Answer:
The Redis instance is in a different VPC network than the app -> Option A
Quick Check:
Network mismatch blocks connection = A [OK]

Quick Trick: Check VPC network match for app and Redis [OK]

Common Mistakes:

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