HLD Interview Notes: Day 9/30
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HLD Interview Notes: Day 9/30 Topic: Cache Stampede Prevention: Locks, Request Coalescing and Refresh-Ahead Your cache works perfectly until a popular key expires and thousands of requests hit your database at once. How do you prevent a cache miss from turning into a production incident? 1. Cache Stampede: The Problem A cache stampede happens when many requests try to rebuild the same expired cache entry simultaneously. Example: A shopping website caches popular product details.The cache expires during a big sale.Thousands of requests miss the cache and query the database. Database loa
Posted by SCR (8.4k followers) 1 days ago · 36 likes · 963 views · view the original post on X. Kept by the Dev Radar as Backend & APIs.
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