[Question] Linux setting when persistence disabled

[荒巻拓哉(Takuya Aramaki)]

Hello,

I am going to use Redis on Linux.

Since I want to use it just as a cache, I disable persistence with below setting.

```

save ""

appendonly no

```

https://redis.io/docs/management/admin/ says that we must set vm.overcommit_memory = 1 and disable THP.

My understanding is that those settings are needed in order to avoid problems on persistence.

If that is true, the settings seem not necessary when persistence is disabled.

Do I understand correctly?

Thanks

[David Maier (Redis)]

Hi Takuya,

I would follow the memory management config in the documentation regardless if persistence is enabled or not. Here is an example: Even if persistence is disabled, a full sync of a replica also relies on taking a snapshot of the data in memory. Configuring it from the beginning by following the best practices might also give you more flexibility in the future to leverage specific features.

BTW: You might think that a cache doesn't need any kind of persistence or replication, but mission-critical applications need to operate on a cache which is already warmed-up. Such a warm up (from a cold cache) can take a while and for this period of time your service can be negatively impacted. So, dependent on the turnover rate of your cache, it might actually make a lot of sense to use replication or persistence.

Regards,

David

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[Owoyemi Ayo]

Pls I don't understand and let it be English

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[荒巻拓哉(Takuya Aramaki)]

Hi David,

I appreciate your kind advise! It is so helpful.

Thank you so much.

Regards

2022年12月13日火曜日 22:24:49 UTC+9 David Maier: