What method offers to guarantee data durability in Redis?

Question

I checked Redis, and I'm curious how the database (which stores all the data in volatile memory) ensures data longevity in the event of a system crash.

Answer 1

Look at the various persistence options in redis and how they guarantee what level of strength

Answer 2

From what I understand, Redis writes the database to disk from time to time, so it does not provide 100% recovery after a design failure

Answer 3

, node .

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You also have the option of saving it very often or in the form of a log, and the disk storage model in the next version offers several more options, but any system that must write to disk before the command is considered successful will be a lot slower than the one which is allowed to save changes in memory until the background storage system catches.