Will the redis elimination strategy delete the key on the disk?

No, the Redis elimination policy will not delete the Key on the disk. This strategy only targets keys in memory to make room for new keys, while persistent data on disk is not affected.

Whether the Redis elimination strategy will delete the Key on the disk

No, Redis elimination The policy will not delete the key on disk.

Details:

Redis’ elimination strategy only targets keys in memory. When Redis reaches the memory limit, it will delete some keys in memory according to a specific elimination strategy to make room for new keys. The obsolete Key is only deleted from memory without affecting the persistent snapshot or AOF log on disk.

Reason:

The purpose of Redis is to provide fast and low-latency data access. Applying an elimination policy to keys on disk can significantly reduce performance because reading and writing to disk is much slower than memory. Additionally, on-disk keys are often used for persistence, so deleting them destroys data integrity.

Conclusion:

The Redis elimination strategy only targets keys in memory and will not affect keys on disk. This means that data persisted to disk is protected from deletion due to obsolescence policies.

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