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Product prices are cached with cache-aside and a 10-minute TTL. After an admin edits a price, some users see the old price for up to 10 minutes. What should the write path do?

Pick one.

• AWrite the new price to the cache, then to the database
• BDelete the cache key, then update the database
• CUpdate the database, then delete the cache key
• DUpdate only the database and let the TTL expire the old price