Understanding and Mitigating Common Cache Issues: Penetration, Breakdown, and Avalanche

Cache Penetration Cache penetration occurs when a large number of requests target data that exists neither in the cache nor in the database. For example, if users repeatedly request non-existent order numbers like -1, these requests bypass the cache entirely and hit the database directly. This scenario can be exploited maliciously to overwhelm ...

Posted on Mon, 18 May 2026 23:33:18 +0000 by yes3no2