Redis - Loss of old data -


we using redis storing cart data. see of carts older month aren't available longer. assume data have been persisted , should available time. there settings must review check why of old data getting deleted? there no ttl set when storing data.

maybe reaches redis maxmemory, take @ 2 config in redis.conf maxmemory , maxmemory-policy

when maxmemory reached, redis follows action specified maxmemory-policy allkeys-lru or noeviction. if policy lru, older data dropped.

as redis docs said:

noeviction: return errors when memory limit reached , client trying execute commands result in more memory used (most write commands, del , few more exceptions).

allkeys-lru: evict keys trying remove less used (lru) keys first, in order make space new data added.


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