[QUESTION] How to prevent any data loss in Redis ? #14411
Description
Hello !
We currently use Redis Streams in a production setup. For high availability, we use Sentinel so we have 5 Redis instances alongside 5 sentinels.
Considering our application store sensitive medical data, data loss would be unacceptable.
It is not very clear in the documentation if there is a setup where we can prevent all data loss (I read https://redis.io/learn/operate/redis-at-scale/persistence-and-durability/persistence-options-in-redis & https://redis.io/docs/latest/operate/oss_and_stack/management/persistence/).
If we did not care about performance and use WAIT 5 0 after every write and appendfsync: always, is it still possible to lose data ? If yes, how ?