You want to improve your application's performance by caching database queries using Memorystore for Redis. Which approach is best?

hard📝 Best Practice Q8 of 15

GCP - Cloud Firestore and Bigtable

ACache all queries indefinitely without expiration.

BCache query results with a short expiration time and update cache on data changes.

CCache only failed queries to retry later.

DUse Redis to store all application logs.

Step-by-Step Solution

Solution:

Step 1: Understand caching best practices
Caching query results with expiration ensures fresh data and reduces stale cache.
Step 2: Evaluate other options
Caching indefinitely risks stale data. Caching failed queries or logs is not caching database queries.
Final Answer:
Cache query results with a short expiration time and update cache on data changes. -> Option B
Quick Check:
Cache with expiration and update = best practice [OK]

Quick Trick: Use expiration times to keep cache fresh [OK]

Common Mistakes:

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