After updating a record in the database, what is a common cache strategy?

Question

After updating a record in the database, what is a common cache strategy?

Option A — Correct answer

Delete or refresh the affected cache key

Option B

Ignore the cache forever

Option C

Only update Redis and skip the database

Option D

Disable all reads

Explanation

Invalidating or refreshing avoids serving stale data after writes.

Quiz: Redis Cache Design for Interviews