Penetration: If there is no such value, it will be obtained all the time, and it will be returned as an empty string in the cache.
Breakdown: There is no data, a large number of requests to query the database, the pressure is high. With locks, one thread reads the database.
Avalanche: A large number of objects fail at the same time, the expiration time is set randomly, and the hotspot data never expires.
Causes and solutions of redis penetration, breakdown and avalanche
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Origin blog.csdn.net/lx9876lx/article/details/120620543
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